The story
From the verb knock + -er, an agentive suffix. The slang term for breasts is attested since the 1940s. For fuller etymology see knock.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A woman's breasts. Full definition →
From the verb knock + -er, an agentive suffix. The slang term for breasts is attested since the 1940s. For fuller etymology see knock.
Etymology from Wiktionary, CC BY-SA 4.0.