simple past tense and past participle of knock

present participle of knock

An act in which something is knocked on, or the sound thus produced

plural of knocking

(transitive, intransitive, rugby) To commit a foul by knocking the ball forward.

(US) Of a warrant, raid, etc.: allowing police to enter a property without immediate prior notification of the residents, as by knocking or ringing a doorbell.

present participle of knock in

simple past tense and past participle of knock in

(card games, archaic) The game of lanterloo.

(obsolete, Oxford University slang) To enter college after hours—after half-past ten at night when the doors have been locked.