Green’s Dictionary of Slang

knock n.1

1. in sexual contexts.

(a) [mid-16C–18C; 20C+] sexual intercourse .

(b) [18C+] the penis.

(c) [20C+] a prostitute or promiscuous woman; on the knock, working as a prostitute.

(d) [1910s] (Aus.) a girlfriend.

2. [mid-17C; late 19C+] in fig. uses.

(a) a negative opinion, a criticism, an insult.

(b) (also knockout) a setback.

3. in (US prison) use.

(a) [1910s] a prison sentence.

(b) [1990s+] the crime with which one has been charged; the crime one has committed.

In compounds

In phrases

call the knock (v.) [SE knock on the door]

[2000s] to track down, apprehend and arrest.

do a knock with (v.) (Aus.)

1. [late 19C+] to arrange a meeting with someone of the opposite sex.

2. [1930s+] to have sexual intercourse; to kiss and cuddle.

get the knock (v.)

[late 19C] to receive punishment .

give the knock to (v.)

1. [late 19C] to knock down.

2. [late 19C] to disconcert, to irritate.

go the knock on (v.)

[1910s+] (Aus.) to steal.

put in the knock (v.)

[1910s] (US) to reject, to refuse.

put the knock on (v.) (also put the knocks in)

[late 19C+] to disparage, to criticize.

take the knock (v.)

1. [late 19C+] to suffer financial losses, often in gambling.

2. [late 19C+] to suffer an unpleasant surprise.

3. [1900s–1910s] of a bookmaker, to be defrauded.

4. (Aus.) to suffer a rejection.

5. [1910s+] of a bookmaker or bettor, to refuse or escape paying a due debt.

6. [late 19C+] (orig. US) to accept the blame.

7. [2000s] to be overcome by drink or drugs.