knock one out

Verb

Meaning

knock one out (third-person singular simple present knocks one out, present participle knocking one out, simple past and past participle knocked one out)

(slang, vulgar) To masturbate.

Source: en.wiktionary.org

Synonyms

masturbate

Close letter words and terms

knock on the head knock on wood knock one off knock one out of the ball park knock one out of the ballpark knock one out of the park