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 : sleeping car
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
Examples of sleeper in a Sentence
Sleepers were awakened by the sound of a loud crash.
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.
Recent Examples of sleeper from the Web
Amazon's sleeper hit Echo and its challenger Google Home have claimed spots on countertops and nightstands across America.
AC Engine 1982 • Union Pacific West Pacific, SD 70 AC Engine 1983 • Amtrak — Two Superliners, one is a sleeper and one is a full dining car.
Crossing the spine of the Peruvian Andes, more than 12,000 feet above sea level, between the cities of Cusco, Puno and Arequipa, three days and 456 miles one way, this is the first ever luxury sleeper train in South America.
Items needed are onesies, bibs, sleepers, diapers and wipes.
Released earlier this year, 'The Boss Baby' has been a sleeper hit at the box office for DreamWorks Animation and Baldwin.
The sleepers will rise up: Halsey, Shawn Mendes ... and Blackbear?
Often hilarious and occasionally bittersweet, Old Montana Yarns is the ultimate sleeper.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sleeper'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of sleeper
SLEEPER Defined for English Language Learners
Definition of sleeper for English Language Learners
: a person who sleeps in a particular way
: someone who is asleep
: a place or piece of furniture that can be used for sleeping
SLEEPER Defined for Kids
Definition of sleeper for Students
1 : someone that sleeps I'm a light sleeper.
2 : a railroad car with berths for sleeping
Seen and Heard
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