Someone who sleeps.
I'm a light sleeper: I get woken up by the smallest of sounds.
That which lies dormant, as a law.
A spy, saboteur, or terrorist who lives unobtrusively in a community until activated by a prearranged signal; may be part of a sleeper cell.
A small starter earring, worn to prevent a piercing from closing.
A railway sleeping car.
We spent a night on an uncomfortable sleeper between Athens and Vienna.
A sleeper hold.
Something that achieves unexpected success after an interval of time.
A box-office bomb when it first came out, the film was a sleeper, becoming much more popular decades after being released.
A goby-like bottom-feeding freshwater fish of the family Odontobutidae.
A nurse shark (family Ginglymostomatidae).
A type of pajama for a person, especially a child, that covers the whole body, including the feet.
Aaron, Devin, and Laura looked so comfy in their sleepers.
An automobile which has been internally modified to excess, while retaining a mostly stock appearance in order to fool opponents in a drag race, or to avoid the attention of the police.
A sedative.
To mark a calf by cutting its ear.
A railroad tie.
A structural beam in a floor running perpendicular to both the joists beneath and floorboards above.
A heavy floor timber in a ship's bottom.
The lowest, or bottom, tier of casks.