knockout drops

plural noun

1. chloral hydrate or any similar rapidly acting drug, especially one put in a drink secretly to make the drinker unconscious.

knockout drops

plural noun

1. slang.
   a drug secretly put into someone's drink to cause stupefaction See also Mickey Finn

Word History and Origins

Origin of knockout drops¹

First recorded in 1890–95

Example Sentences

“I’ll bet she gives him knockout drops,” Tidings once told me.

From Literature

German media reported that they apparently were victims of so-called “knockout drops,” which can be mixed into drinks or food.

From Washington Times

Mitraillette tried to dose me with knockout drops again a few minutes ago—30 minutes to oblivion.

From Literature

Under the sway of the most sublime knockout drops, I didn’t remember a thing.

From Washington Post

I take it, though, that there's some play with knockout drops, or something of the sort.

From Project Gutenberg