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.

Read more on Literature

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

Read more on Washington Times

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

Read more on Literature

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

Read more on Washington Post

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

Read more on Project Gutenberg