Someone who has a tendency to feel too cold when sleeping at night.

Someone who has a tendency to feel too hot when sleeping at night.

(rail transport, UK) A sleeping car train which also includes vehicles for carrying passengers' motor cars.

plural of cold sleeper

plural of hot sleeper

plural of fat sleeper

The fish Dormitator maculatus. / Used other than figuratively or idiomatically: see fat, sleeper.

plural of sleeper hit

A work of entertainment that becomes successful only some time after its launch.

Any shark of the family Somniosidae.