Dictionary

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sleeper

English

🔊 an unexpected hit
“that movie was the sleeper of the summer”
🔊 tropical fish that resembles a goby and rests quietly on the bottom in shallow water
🔊 a piece of furniture that can be opened up into a bed
🔊 pajamas with feet
🔊 a rester who is sleeping
🔊 an unexpected achiever of success
“the winner was a true sleeper--no one expected him to get it”
🔊 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
🔊 a passenger car that has berths for sleeping
🔊 one of the cross braces that support the rails on a railway track
“the British call a railroad tie a sleeper”