- a pill or capsule containing a drug for inducing sleep.
Origin of sleeping pill
First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Words for sleeping pillsedative, bromide, hypnotic, soporific, barbiturate, benzodiazepine, nightcap
- a pill or tablet containing a sedative drug, such as a barbiturate, used to induce sleep