Sleeper - Definition

n 1: a rester who is sleeping [syn: sleeper, slumberer]
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: one of the cross braces that support the rails on a railway
track; "the British call a railroad tie a sleeper" [syn:
tie, railroad tie, crosstie, sleeper]
5: a passenger car that has berths for sleeping [syn: sleeping
car, sleeper, wagon-lit]
6: pajamas 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 [syn: sleeper, sleeper goby]
9: an unexpected hit; "that movie was the sleeper of the summer"