A Quick and Simple Dictionary

sleeper

1. Noun.  Someone who sleeps.
2. Noun.  A saboteur or terrorist who lives unobtrusively in a community until activated by a prearranged signal; may be part of a sleeper cell.
3. Noun.  A railroad sleeping car.
4. Noun.  (rail transport, British) A railroad tie. Image:Spoorbaan houten dwarsliggers alphen aan den rijn.jpg|right|thumb|The short wooden bars are '''sleepers''', and the long metal bars are [[railway lines.]].
5. Noun.  Something that achieves unexpected success after an interval of time.
6. Noun.  A goby-like bottom-feeding freshwater fish of the family Odontobutidae. Also "sleeper goby.".
7. Noun.  A type of pajama for a person, especially a child, that covers its whole body, including their feet.
8. Noun.  A structural beam in a floor running perpendicular to both the joists beneath and floorboards above.
9. Noun.  An automobile which, not too quick out of the factory has been internally modified to wretched excess, while retaining a mostly stock appearance in order to fool opponents in a drag race.