A device in a knitting machine to remove loops from the needles.
Verb
Used other than with a figurative or idiomatic meaning: see knock, off.
(transitive) To bump or hit so that something falls off
(idiomatic, intransitive) To quit; stop doing work or other activity. The term originated from the practice aboard slave galleys to have a man beat time for the rowers by knocking on a block or drum; when he stopped, the rowers could rest.