mainline
1 of 3verb
main·line ˈmān-ˌlīn 
mainlined; mainlining; mainlines
transitive verb
slang : to take by or as if by injecting into a principal vein
intransitive verb
slang : to mainline a narcotic drug
mainline
2 of 3adjective
: being part of an established group
also : being in the mainstream
main line
3 of 3noun
1
: a principal highway or railroad line
2
slang : a principal vein of the circulatory system
Example Sentences
Verb His addiction grew worse when he began mainlining.
Recent Examples on the Web
University Of Houston Energy Fellows, Forbes, 18 Mar. 2022 Given the past 72 hours the Norwegian producer has just careened through, his need to mainline caffeine is understandable. Katie Bain, Billboard, 10 Mar. 2022 The company, at its core, encourages hyper-centralization, ensuring that teens around the world can mimic the same dance or mainline the same 15-second snippet of a song. Elias Leight, Rolling Stone, 15 Dec. 2021 No wonder American diplomats are getting louder in their frustrations with Russia's plan to mainline into Europe with a new pipeline that will make Russia the continent's natural gas pusher. Zachary B. Wolf, CNN, 28 Sep. 2021 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Shefali Luthra, al, 15 Sep. 2022 The first confirmation came from Nintendo itself as part of its latest Nintendo Direct announcement frenzy (which, among other things, finally confirmed the next mainline Legend of Zelda game's name). Sam Machkovech, Ars Technica, 13 Sep. 2022 The author's mainline Song of Ice and Fire novels began in 1996 by decapitating all the familiar fantasy archetypes. Darren Franich, EW.com, 19 Aug. 2022 This is done by not having just one mainline source of cooling or electricity, but multiple ones that can operate independently of each other in the event one or more cooling or electrical systems go down. Miriam Fauzia, Popular Mechanics, 17 Aug. 2022 Delta has a fleet of more than 850 mainline aircraft, including more than 450 Boeing 717s, 737s, 757s and 767s. Michelle Chapman, Chicago Tribune, 18 July 2022 There is a pilot shortage at the (regional airlines) because the mainline carriers (like American, Delta and United) hire from the regionals. David Koenig, ajc, 8 Aug. 2022 There is a pilot shortage at the (regional airlines) because the mainline carriers (like American, Delta and United) hire from the regionals. David Koenig, Chron, 8 Aug. 2022 These more than make up for losses from mainline Protestant denominations, which are indeed in free fall and have been for decades. Byron R. Johnson And Jeff Levin, WSJ, 28 July 2022 Reuters, NBC News, 17 Sep. 2022 Lofty inflation is inviting comparisons to the 1970s, but one of the biggest differences between now and then hinges on how central banks today understand their role as the main line of defense against high inflation. Nick Timiraos, WSJ, 26 Aug. 2022 There is also a lower risk that supercells could also develop out ahead of the main line of storms, forecasters said. Leigh Morgan, al, 29 Mar. 2022 Consumer Research, however, showed that 72% of the materials in the new line contained damaging synthetic components, a lot higher than the contents of its other main line (61%). Forbes, 10 Dec. 2021 Founded in 1993, Pleats Please began as an experiment for Japanese designer Issey Miyake, who originally added the pleated pieces to his main line before spinning them off into its own brand. Diana Tsui, refinery29.com, 29 June 2022 Those calling during after hours or weekends were asked to call the sheriff’s office main line at 256-734-0342. Howard Koplowitz | Hkoplowitz@al.com, al, 27 Apr. 2022 The first round will be discrete storms that develop ahead of the main line of storms early this afternoon, anytime between noon and 3 p.m. Jennifer Gray, CNN, 16 May 2022 The war largely doesn’t change the equation for the Navy, which is the main line of defense against China in the Pacific. Kyle Mizokami, Popular Mechanics, 30 Mar. 2022 See More
Verb
This pipeline, which runs under the Baltic Sea, gave Germany the option to mainline Russian gas. University Of Houston Energy Fellows, Forbes, 18 Mar. 2022 Given the past 72 hours the Norwegian producer has just careened through, his need to mainline caffeine is understandable. Katie Bain, Billboard, 10 Mar. 2022 The company, at its core, encourages hyper-centralization, ensuring that teens around the world can mimic the same dance or mainline the same 15-second snippet of a song. Elias Leight, Rolling Stone, 15 Dec. 2021 No wonder American diplomats are getting louder in their frustrations with Russia's plan to mainline into Europe with a new pipeline that will make Russia the continent's natural gas pusher. Zachary B. Wolf, CNN, 28 Sep. 2021 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Through the mid-20th century, most Protestants in the U.S. belonged to mainline churches, but now they are outnumbered by evangelicals. The Salt Lake Tribune, 14 Sep. 2020 Adjective
Just 32 percent said so, compared with 64 percent of mainline Christians. Shefali Luthra, al, 15 Sep. 2022 The first confirmation came from Nintendo itself as part of its latest Nintendo Direct announcement frenzy (which, among other things, finally confirmed the next mainline Legend of Zelda game's name). Sam Machkovech, Ars Technica, 13 Sep. 2022 The author's mainline Song of Ice and Fire novels began in 1996 by decapitating all the familiar fantasy archetypes. Darren Franich, EW.com, 19 Aug. 2022 This is done by not having just one mainline source of cooling or electricity, but multiple ones that can operate independently of each other in the event one or more cooling or electrical systems go down. Miriam Fauzia, Popular Mechanics, 17 Aug. 2022 Delta has a fleet of more than 850 mainline aircraft, including more than 450 Boeing 717s, 737s, 757s and 767s. Michelle Chapman, Chicago Tribune, 18 July 2022 There is a pilot shortage at the (regional airlines) because the mainline carriers (like American, Delta and United) hire from the regionals. David Koenig, ajc, 8 Aug. 2022 There is a pilot shortage at the (regional airlines) because the mainline carriers (like American, Delta and United) hire from the regionals. David Koenig, Chron, 8 Aug. 2022 These more than make up for losses from mainline Protestant denominations, which are indeed in free fall and have been for decades. Byron R. Johnson And Jeff Levin, WSJ, 28 July 2022 Noun
If the main line reaches capacity, entry will be paused, the department said. Reuters, NBC News, 17 Sep. 2022 Lofty inflation is inviting comparisons to the 1970s, but one of the biggest differences between now and then hinges on how central banks today understand their role as the main line of defense against high inflation. Nick Timiraos, WSJ, 26 Aug. 2022 There is also a lower risk that supercells could also develop out ahead of the main line of storms, forecasters said. Leigh Morgan, al, 29 Mar. 2022 Consumer Research, however, showed that 72% of the materials in the new line contained damaging synthetic components, a lot higher than the contents of its other main line (61%). Forbes, 10 Dec. 2021 Founded in 1993, Pleats Please began as an experiment for Japanese designer Issey Miyake, who originally added the pleated pieces to his main line before spinning them off into its own brand. Diana Tsui, refinery29.com, 29 June 2022 Those calling during after hours or weekends were asked to call the sheriff’s office main line at 256-734-0342. Howard Koplowitz | Hkoplowitz@al.com, al, 27 Apr. 2022 The first round will be discrete storms that develop ahead of the main line of storms early this afternoon, anytime between noon and 3 p.m. Jennifer Gray, CNN, 16 May 2022 The war largely doesn’t change the equation for the Navy, which is the main line of defense against China in the Pacific. Kyle Mizokami, Popular Mechanics, 30 Mar. 2022 See More Word History
First Known Use
Verb
1938, in the meaning defined at transitive sense
Adjective
1941, in the meaning defined above
Noun
1841, in the meaning defined at sense 1
Medical Definition
mainline 1 of 2
verb
main·line ˈmān-ˈlīn
mainlined; mainlining
transitive verb
slang : to take by or as if by injecting into a principal vein
intransitive verb
slang : to mainline a narcotic drug (as heroin)
main line
2 of 2noun
slang
: a principal vein of the circulatory system