Definition of "copilot" [copilot]

• The second or relief pilot of an aircraft. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "“Nightmare flight, stand by for conditions at Yuma,” called the copilot of the KC-10."
• "By now, though, replacing his copilot was the least of Roy's Cannonball problems."
• "LEMON: Well, the copilot was the only survivor of last summer's Comair crash in Kentucky and he is said to remember none of it."