What does "punch out" mean?

Record one's time of departure from work, as in We never punch out at exactly five o'clock. This usage, dating from the 1920s, alludes to the use of a time clock. Also see punch in, def. 1.
Eject from a military aircraft, as in The pilot punched out just before the plane blew up. [Slang; 1960s]

Learn more about punch out

» punch-out definition

link/cite print suggestion box

More from YD