Synonym of knock down ginger (“prank of knocking on a front door and running away”)

Alternative spelling of knock-knock joke

One of a class of childish jokes told as a dialog, and usually including a pun, in the following form:

An arrangement between multiple insurance companies in which each company pays the losses incurred by its own policyholders in an event, regardless of who was at fault (now rarely used outside of motor insurance).

plural of knock-for-knock agreement

Third-person singular simple present indicative form of knock in

plural of knock

Third-person singular simple present indicative form of knock

In diesel engines, a repetitive knocking sound when delayed ignition causes sudden high pressures.

(sports) A short practice session before a tennis match. / Something constructed shoddily or hastily. / (slang) A pregnancy.