sleeper
3 ENTRIES FOUND:
plural
sleepers
plural
sleepers
Britannica Dictionary definition of SLEEPER
[count]
1
a
:
a person who sleeps in a particular way
-
a light sleeper [=someone who does not sleep well and wakes up easily]
-
a heavy sleeper [=someone who sleeps well and does not wake up easily]
-
a sound sleeper
b
:
someone who is asleep
-
Sleepers were awakened by the sound of a loud crash.
2
a
:
a place or piece of furniture that can be used for sleeping
— usually used before another noun
-
the sleeper cab of a truck
-
Our guests will use the sleeper sofa. [=a sofa that folds out to form a bed]
b
:
sleeping car
3
chiefly US, informal
:
someone or something that suddenly becomes successful in a way that was not expected
-
He may turn out to be the sleeper in this year's election.
-
The movie was the summer's sleeper.
-
The movie became the sleeper hit of the summer.
4
:
a spy who lives and works for a long time like an ordinary person among the people he or she is spying on
— often used before another noun
-
a sleeper agent
-
The police discovered a sleeper cell [=a small organized group of spies] that had been operating in the city for years.
5
US
:
a piece of clothing that covers the entire body including usually the feet and that is worn by a baby or small child
6
