sleeper

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sleeper

1. a railway sleeping car or compartment
2. Brit one of the blocks supporting the rails on a railway track
3. a wrestling hold in which a wrestler presses the sides of his opponent's neck, causing him to pass out
4. any gobioid fish of the family Eleotridae, of brackish or fresh tropical waters, resembling the gobies but lacking a ventral sucker
5. a spy planted in advance for future use, but not currently active

Sleeper

A horizontal timber laid on a slab or on the ground and to which the subflooring is nailed; any long horizontal beam, at or near the ground, which distributes the load from the posts to the foundation.

sleeper

[′slēp·ər]
(civil engineering)
A timber, steel, or precast concrete beam placed under rails to hold them at the correct gage.

sleeper

1. One of a number of horizontal timbers that are laid on a concrete slab (or on the ground) and to which the flooring is nailed.
2. Any long horizontal beam, at or near the ground, which distributes the load from posts or framing.
References in periodicals archive ?
Recently, several research groups have reported findings that may help explain how Epstein-Barr acts as a viral sleeper agent. For example, some scientists have found a mechanism by which Epstein-Barr virus may sneak into a body.
Unbeknown to him, he's actually a CIA sleeper agent who has been programmed to forget this important fact.
Unknown to him, he's actually a CIA sleeper agent who, thanks to a fondness for marijuana, has forgotten the fact.
The team has discovered a sleeper agent, Kate, who has connections with a US military boss.
THE GAME BBC2 9pm The spy drama continues, with Joe (Tom Hughes, left) and the team attempting to uncover the mission of a sleeper agent who is well connected to the US military.
To all intents and purposes, he's a reliable and well-liked member of the Ministry of Defence staff - but he's also a KGB sleeper agent whose ability to lay his hands on top secret documents has proved valuable to his Soviet employers.
and 1:50 a.m., BBCA) The team discover a sleeper agent with terrifying connections in the U.S.
SALT SALT (Channel 4, tonight, 9pm) ANGELINA Jolie stars as the eponymous Evelyn Salt, a respected CIA agent whose life and career are turned upside down when a man claiming to be a Russian defector walks into her office and identifies her as a sleeper agent who has been trained by the KGB.
She also said she admires Angelina Jolie, who played a suspected Russian sleeper agent in this year's "Salt".
In Salt the mum-of-six plays as a CIA officer on the run after she is accused of being a Russian sleeper agent.
ALEX Salmond was last night branded a "sleeper agent" trying to pull Britain out of the EU as he faced calls to stop campaigning in the referendum.
However, unknown to himself, Mike is a lethal sleeper agent. He's a guinea pig in the CIA's Ultra programme, designed to turn criminals into killing machines.