Dictionary
sleeper
noun sleep·er \ˈslē-pər\
: a person who sleeps in a particular way
: someone who is asleep
: a place or piece of furniture that can be used for sleeping
Full Definition of SLEEPER
1
: one that sleeps
2
: a piece of timber, stone, or steel on or near the ground to support a superstructure, keep railroad rails in place, or receive floor joists : stringpiece
3
4
: someone or something unpromising or unnoticed that suddenly attains prominence or value <the low-budget film became the summer's sleeper>
5
: children's pajamas usually with feet —usually used in plural
6
chiefly British : a small earring or stud worn to keep the hole of a pierced ear from closing
7
: 2mole 4
See sleeper defined for English-language learners
See sleeper defined for kids
ADVERTISEMENT
First Known Use of SLEEPER
12th century
SLEEPER Defined for Kids
sleeper
noun sleep·er \ˈslē-pər\
Definition of SLEEPER for Kids
1
: someone that sleeps <I'm a light sleeper.>
2
: a railroad car with berths for sleeping
Learn More About SLEEPER
Browse
Next Word in the Dictionary: sleeper cellPrevious Word in the Dictionary: sleepcoatAll Words Near: sleeper
ADVERTISEMENT
Seen & Heard
What made you want to look up sleeper? Please tell us where you read or heard it (including the quote, if possible).