knocking-out
Preserved but no longer current.
All visitors, on leaving a college after time, have to state in whose rooms they have been, that his gate-bill may be scored up for them. When a rackety party takes place, the visitors, or "out college men," are generally supplied with a list of the names of the quietest men in college, so that the whereabouts of the party may not be betrayed.—Oxford University.
Era: ca. 1874 (Victorian)
Sources & notes
Historical definition reproduced from Hotten’s The Slang Dictionary (1874, public domain; Project Gutenberg #42108, retrieved 2026-07-31). Reflects the attitudes of its era.
Common questions
What does “knocking-out” mean?
All visitors, on leaving a college after time, have to state in whose rooms they have been, that his gate-bill may be scored up for them. When a rackety party takes place, the visitors, or "out college men," are generally supplied with a list of the names of the quietest men in college, so that the whereabouts of the party may not be betrayed.—Oxford University.
Is “knocking-out” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.