Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “sleeper”

sleeper

noun uk   /ˈsliː.pər/ us    /-pɚ/

sleeper noun (PERSON)

a good/heavy/light sleeper someone who sleeps in the stated way: I'm a light sleeper - the slightest noise wakes me. You won't wake him - he's such a heavy sleeper.

sleeper noun (ON TRAIN)

acarriagecar in a train with beds for passengers to sleep in, or one of the beds in this carriagecar, or the type of train that has these carriagescars: I'm travelling overnight so I've booked a sleeper. The 11.45 to Glasgow is a sleeper.

sleeper noun (BLOCK)

[C] UK (US railroad tie) one of the heavy horizontal blocks that supports a railway track

sleeper noun (RING)

[C] UK a small gold or silver ring that is worn in a pierced ear (= one that has a hole in it) to stop the hole from closing while other earrings are not being worn

sleeper noun (SUDDEN ACTIVITY)

[C] a person or thing that is suddenly and surprisingly successful after a long period of not achieving anything [C] a spy who only becomes active a long time after being put in place by an organization or country
(Definition of sleeper from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of sleeper?
Add Cambridge dictionaries to your browser to your website

Definitions of “sleeper” in other dictionaries

Word of the Day

for starters

used to say that something is the first in a list of things

Word of the Day

Countability – grammar codes

by Dom Glennon​​,
November 26, 2014
Advices and informations Have you ever noticed strange codes in square brackets on entries in Cambridge Dictionaries Online and wondered what they mean? These are grammar codes, giving you a brief summary of how that word behaves grammatically. More information can be obtained by hovering your cursor over the code, and there’s

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More