A suburb and ward in Belfast, Northern Ireland. / A townland in Drumcliff civil parish, County Clare, Ireland. / A town and civil parish of County Mayo, Ireland, location of the Knock Shrine.

A knock-knock joke

(colloquial, often childish) A phrase used to introduce a "knock knock joke" / (colloquial, often childish) A phrase used in lieu of knocking (e.g. on the door), when it is not possible to knock.

a verbal emulation of a knocking sound

plural of knock knock

An abrupt rapping sound, as from an impact of a hard object against wood. / A sharp impact. / (figuratively) A criticism. / (figuratively) A blow or setback.

(transitive, dated) To strike for admittance; to rap upon, as a door. / (transitive, colloquial) To criticize verbally; to denigrate; to undervalue.

(rugby) A foul in which a player knocks the ball forward. / (chiefly UK) Resulting as an indirect effect.

simple past tense and past participle of knock

present participle of knock