knock-knock (knocking sound)

a revolving door

(phonetics) sonority

to be heard / sound, be taken as (give someone a certain impression from hearing) / to be widely known; to be famous / to be audible

knock (abrupt rapping sound) / (baseball) fungo

to knock / to press down on the rear end of a mechanical pencil and dispense lead

Western-style door

(with negative verbs) no one, nobody / anyone, anybody

somebody, someone

who / someone