breastplate
noun
breast·plate ˈbres(t)-ˌplāt 
1
: a usually metal plate worn as defensive armor for the breast see armor illustration
2
: a vestment worn in ancient times by a Jewish high priest and set with 12 gems bearing the names of the tribes of Israel
3
: a piece against which a worker's breast is pressed in operating a tool (such as a breast drill)
Example Sentences
Recent Examples on the Web Staff also check the reptile's general condition, as well as his eyes, neck, breastplate and mobility every day, according to the museum website. 
Fox News, 2 Sep. 2022 Decked in a garb that called to mind people who predated modern history, Jesus Negrete — better known as Don Chuy — wore native Aztec garb and had bike and a peace sign painted on his breastplate. Los Angeles Times, 10 July 2022 And then there’s the lovely, loony sight of Russell Crowe, gamely chasséing in a golden breastplate and white tutu as the Greek god Zeus. Justin Changfilm Critic, Los Angeles Times, 5 July 2022 In addition to sporting a platinum blonde wig, Rossum endured blisters from the three-pound breastplate glued to her torso and tear duct issues from wearing two sets of contact lenses, in addition to the heavy eye makeup. Dan Heching, PEOPLE.com, 17 May 2022 Rossum wore facial prosthetics, contacts and a massive breastplate to embody her character over the course of decades. Sasha Urban, Variety, 11 May 2022 His grave goods included not just surgical tools but a golden mask with feathers around the eyes, a large bronze breastplate, and a set of gilded copper bowls. Kiona N. Smith, Ars Technica, 13 Apr. 2022 The bustier appeared on its own under suits, in satiny pastels, or incorporated into slinky slip dresses, as a sort of breastplate on clinging tops and even as a detail on a long leather jacket. Colleen Barry, USA TODAY, 26 Feb. 2022 The bustier appeared on its own under suits, in satiny pastels, or incorporated into slinky slip dresses, as a sort of breastplate on clinging tops and even as a detail on a long leather jacket. Colleen Barry, ajc, 26 Feb. 2022 See More
Fox News, 2 Sep. 2022 Decked in a garb that called to mind people who predated modern history, Jesus Negrete — better known as Don Chuy — wore native Aztec garb and had bike and a peace sign painted on his breastplate. Los Angeles Times, 10 July 2022 And then there’s the lovely, loony sight of Russell Crowe, gamely chasséing in a golden breastplate and white tutu as the Greek god Zeus. Justin Changfilm Critic, Los Angeles Times, 5 July 2022 In addition to sporting a platinum blonde wig, Rossum endured blisters from the three-pound breastplate glued to her torso and tear duct issues from wearing two sets of contact lenses, in addition to the heavy eye makeup. Dan Heching, PEOPLE.com, 17 May 2022 Rossum wore facial prosthetics, contacts and a massive breastplate to embody her character over the course of decades. Sasha Urban, Variety, 11 May 2022 His grave goods included not just surgical tools but a golden mask with feathers around the eyes, a large bronze breastplate, and a set of gilded copper bowls. Kiona N. Smith, Ars Technica, 13 Apr. 2022 The bustier appeared on its own under suits, in satiny pastels, or incorporated into slinky slip dresses, as a sort of breastplate on clinging tops and even as a detail on a long leather jacket. Colleen Barry, USA TODAY, 26 Feb. 2022 The bustier appeared on its own under suits, in satiny pastels, or incorporated into slinky slip dresses, as a sort of breastplate on clinging tops and even as a detail on a long leather jacket. Colleen Barry, ajc, 26 Feb. 2022 See More Word History
First Known Use
14th century, in the meaning defined at sense 1
Kids Definition
breastplate
noun
breast·plate ˈbrest-ˌplāt
: a piece of armor for covering the breast