sleeper

IPA: sɫˈipɝ

Someone who sleeps.
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.
(martial arts, wrestling) A sleeper hold.
Something that achieves unexpected success after an interval of time.
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.
(slang) 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.
(slang) A sedative.
(slang, gambling) A bet placed on the gambling table and then forgotten about by the gambler.
(science fiction) A pod or similar device containing a person in cryosleep.
(rail transport, Britain) A railroad tie.
(carpentry) A structural beam in a floor running perpendicular to both the joists beneath and floorboards above.
(nautical) A heavy floor timber in a ship's bottom.
(nautical) The lowest, or bottom, tier of casks.
A surname.

Examples of "sleeper" in Sentences

But we're learning more and more that there is what they call a sleeper effect to divorce.
The term sleeper has simply taken on a new meaning and sleepers themselves are a bit harder to find.
Four years after that FBI report was written, the word sleeper moved from spookspeak jargon into the general language.
I've been looking and looking and all I can find for the Caledonia sleeper is the listing sandwiches, snacks, and a full British menu.
But for Red Line's money, the true definition of a sleeper is a guy who won't get selected that high but has a chance to develop into one of the better players at his position in the draft.
But for Red Line's money, the true definition of a sleeper is a guy who probably won't get selected that high, but has a chance to develop into one of the better players at his position in the draft.
You what we call a sleeper troll, writing all these pro-Obama, pro-liberal comments to make the community think you're one of them, and then wham! you hit us with the brillance of the Repub philosophy.