single cross
noun
: a first-generation hybrid between two selected and usually inbred lines compare double cross sense 2
Example Sentences
Recent Examples on the Web JetBlue won’t disclose what percentage of its total annual emissions that equals, but a single cross-country flight on an Airbus 321 produces roughly 500,000 pounds of carbon dioxide. 
Natasha Frost, Quartz, 15 Jan. 2020 Ronaldo led Portugal with three goals and two assists, while going one-on-one only 11 times and sending in a single cross in 625 minutes. Paul Carr, SI.com, 12 June 2018
Natasha Frost, Quartz, 15 Jan. 2020 Ronaldo led Portugal with three goals and two assists, while going one-on-one only 11 times and sending in a single cross in 625 minutes. Paul Carr, SI.com, 12 June 2018 Word History
First Known Use
1940, in the meaning defined above