1. A rester who is sleeping
   - slumberer, snoozer 
2. A spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal 
3. An unexpected achiever of success
   "the winner was a true sleeper--no one expected him to get it" 
4. [Brit] One of the cross braces that support the rails on a railway track
   "the British call a railway tie a sleeper"
   - tie [N. Amer], railroad tie [N. Amer], crosstie [N. Amer] 
5. A passenger car that has berths for sleeping
   - sleeping car, wagon-lit 
6. Pyjamas with feet; worn by children 
7. A piece of furniture that can be opened up into a bed 
8. Tropical fish that resembles a goby and rests quietly on the bottom in shallow water
   - sleeper goby 
9. An unexpected hit
   "that movie was the sleeper of the summer"

Derived forms: sleepers

See also: sleep

Type of: achiever, article of furniture, bang, brace, bracing, carriage, coach, diversionist, furniture, hit, jammies [N. Amer], jim-jams [Brit], pajama, passenger car, percoid, percoid fish, percoidean, piece of furniture, pj's, pyjama, rester, saboteur, sizzler, smash, smasher, spy, strike, succeeder, success, terrorist, undercover agent, winner, wrecker

Part of: Eleotridae, family Eleotridae, railroad [N. Amer], railroad track [N. Amer], railway [Brit, Cdn], railway track [Brit, Cdn], sleeper nest

Encyclopedia: Sleeper Sleeper, Missouri

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