to knock on a door

to rip off; to extort (money); extortion; blackmail

to beat sb; to beat (a drum)

to sound a bell; to raise the alarm

to come to a decision; to fix on (a date etc); to determine; to finalize; to nail down (a deal etc)

to pound; to rap

to get sth open by tapping or striking it; (figuratively, when followed by sth like ∼的大門|∼的大门[xx5 de5 da4 men2]) to open the door to ~; to gain access to ~

extortion and blackmail (idiom)

to sound a bell; (of a clock) to chime

to key in; to input

to press (fruit); variant of 敲詐|敲诈[qiao1 zha4]

(neologism) (slang) to impatiently await

back-knocking massage

to beat a gong

a knell

to receive oral sex from a prostitute

to have sex with a prostitute

to be masturbated by a prostitute

extortion by taking advantage of sb's weakness

extortion

to back sb up; to support sb in an argument; (lit. to beat nearby drum)

lit. a brick as a door knocker (idiom); fig. a temporary expedient; to use sb as a stepping stone to fortune

a deliberate show of strength as a warning

lit. to beat a gong; fig. to irritate sb; a provocation

to make a continual banging sound; (fig.) to provoke with words

to make doubly sure (idiom)

to strike the edge of a gong; (fig.) to stir up trouble from the sidelines