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Dictionary definition for: Sleeper

1. (n) a rester who is sleeping

2. (n) 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. (n) an unexpected achiever of success; "the winner was a true sleeper--no one expected him to get it"

4. (n) one of the cross braces that support the rails on a railway track; "the British call a railroad tie a sleeper"

5. (n) a passenger car that has berths for sleeping

6. (n) a piece of furniture that can be opened up into a bed

7. (n) tropical fish that resembles a goby and rests quietly on the bottom in shallow water

8. (n) an unexpected hit; "that movie was the sleeper of the summer"

WordNet 2.1 Copyright Princeton University. All rights reserved.