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Definition of Sleeper
1. Noun. A rester who is sleeping.
Exact synonyms: Slumberer
Specialized synonyms: Dreamer, Rip Van Winkle, Sleeping Beauty, Noctambulist, Sleepwalker, Somnambulist, Snorer, Somniloquist
Generic synonyms: Rester
Derivative terms: Sleep, Slumber
Specialized synonyms: Dreamer, Rip Van Winkle, Sleeping Beauty, Noctambulist, Sleepwalker, Somnambulist, Snorer, Somniloquist
Generic synonyms: Rester
Derivative terms: Sleep, Slumber
2. Noun. A spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal.
Category relationships: Act Of Terrorism, Terrorism, Terrorist Act
Group relationships: Sleeper Nest
Generic synonyms: Diversionist, Saboteur, Wrecker, Spy, Undercover Agent, Terrorist
Group relationships: Sleeper Nest
Generic synonyms: Diversionist, Saboteur, Wrecker, Spy, Undercover Agent, Terrorist
3. Noun. An unexpected achiever of success. "The winner was a true sleeper--no one expected him to get it"
4. Noun. One of the cross braces that support the rails on a railway track. "The British call a railroad tie a sleeper"
Exact synonyms: Crosstie, Railroad Tie, Tie
Generic synonyms: Brace, Bracing
Group relationships: Railroad, Railroad Track, Railway
Generic synonyms: Brace, Bracing
Group relationships: Railroad, Railroad Track, Railway
5. Noun. A passenger car that has berths for sleeping.
Exact synonyms: Sleeping Car, Wagon-lit
Terms within: Drawing Room, Roomette
Generic synonyms: Carriage, Coach, Passenger Car
Derivative terms: Sleep
Terms within: Drawing Room, Roomette
Generic synonyms: Carriage, Coach, Passenger Car
Derivative terms: Sleep
6. Noun. Pajamas with feet; worn by children.
7. Noun. A piece of furniture that can be opened up into a bed.
8. Noun. Tropical fish that resembles a goby and rests quietly on the bottom in shallow water.
Exact synonyms: Sleeper Goby
Generic synonyms: Percoid, Percoid Fish, Percoidean
Group relationships: Eleotridae, Family Eleotridae
Generic synonyms: Percoid, Percoid Fish, Percoidean
Group relationships: Eleotridae, Family Eleotridae
9. Noun. An unexpected hit. "That movie was the sleeper of the summer"
Generic synonyms: Bang, Hit, Smash, Smasher, Strike
Language type: Figure, Figure Of Speech, Image, Trope
Language type: Figure, Figure Of Speech, Image, Trope
Definition of Sleeper
1. n. One who sleeps; a slumberer; hence, a drone, or lazy person.
2. n. Something lying in a reclining posture or position.
Definition of Sleeper
1. one that sleeps [n -S] - See also: sleeps
Medical Definition of Sleeper
1.
1. One who sleeps; a slumberer; hence, a drone, or lazy person.
2. That which lies dormant, as a law.
3. A sleeping car.
4.