knockout drops
plural noun
chloral hydrate or any similar rapidly acting drug, especially one put in a drink secretly to make the drinker unconscious.
Origin of knockout drops
First recorded in 1890–95
Words nearby knockout drops
knocker,
knocking copy,
knocking-shop,
knockoff,
knockout,
knockout drops,
knockwurst,
knole,
knoll,
knoop scale,
knop
British Dictionary definitions for knockout drops
knockout drops