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English definition of “sleeper”

sleeper

noun     /ˈsliːpər/
a light/heavy sleeper someone who wakes up easily /does not wake up easily Sleep and sleeping
TRAIN [C] a train or a part of a train that has beds in itTrains and parts of trainsRailways and railway lines
SUPPORT [C] UK (US railroad tie) a piece of wood that is used to support a railway track (= the thing a train moves along on) Railways and railway lines
JEWELLERY [C] UK a small gold or silver ring worn in the ear Jewellery
(Definition of sleeper noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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