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sleeper - definition and synonyms

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noun [countable]     sleeper pronunciation in British English
Word Forms
  1. 1
    someone who is sleeping
  2. 2
    a train with beds for passengers to sleep in
  3. 4
    British a ring that you wear in your ear to prevent the hole from closing
  4. 5
    mainly American a film or a book that becomes very popular although it was not expected to

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