Knock one out Meaning in English
expression
Definition
This informal expression has two meanings: (1) to masturbate (slang, mostly for men); (2) to do something quickly and easily, such as a task or project.
Usage & Nuances
Highly informal and often vulgar when referring to masturbation—use with caution, mainly among close friends or in private settings. The 'quickly do a task' meaning is also informal but not offensive. Context clarifies which meaning is intended.
Example Sentences
He said he could knock one out in ten minutes.
basic
Some people use the bathroom to knock one out.
basic
I can knock one out before lunch if you need this report quickly.
basic
Sometimes, all you need is five minutes alone to knock one out and relax.
natural
Don’t worry about that essay—I’ll knock one out tonight and send it over.
natural
He told a joke and then stepped out to knock one out.
natural