Longman Dictionary of Contemporary English homepage

sleeper

noun
     
Related topics: Trains, Railways
sleep‧er [countable]
1 someone who sleeps in a particular way
light sleeper (=someone who wakes easily)
heavy sleeper (=someone who does not wake easily)
2 someone who is asleep
sleeper
3 British EnglishTTT a heavy piece of wood or concrete that supports a railway track [= tie American English]
4TTT
a) a night train with carriages that have beds for passengers to sleep in
b) a sleeping car
c) American English a bed on a train for a passenger to sleep in
5 especially American English a film, book etc which is successful, even though people did not expect it to be
6 American English a piece of clothing for a baby that covers its whole body including its feet
7 a spy who is sent to a particular place and who lives an ordinary life there until a later time, when they begin their spying activities

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