The Collaborative International Dictionary
Exhaust \Ex*haust"\, a. [L. exhaustus, p. p.]
Drained; exhausted; having expended or lost its energy.
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Pertaining to steam, air, gas, etc., that is released from the cylinder of an engine after having preformed its work.
Exhaust draught, a forced draught produced by drawing air through a place, as through a furnace, instead of blowing it through.
Exhaust fan, a fan blower so arranged as to produce an exhaust draught, or to draw air or gas out of a place, as out of a room in ventilating it.
Exhaust nozzle, Exhaust orifice (Steam Engine), the blast orifice or nozzle.
Exhaust pipe (Steam Engine), the pipe that conveys exhaust steam from the cylinder to the atmosphere or to the condenser.
Exhaust port (Steam Engine), the opening, in the cylinder or valve, by which the exhaust steam escapes.
Exhaust purifier (Milling), a machine for sorting grains, or purifying middlings by an exhaust draught.
--Knight.Exhaust steam (Steam Engine), steam which is allowed to escape from the cylinder after having been employed to produce motion of the piston.
Exhaust valve (Steam Engine), a valve that lets exhaust steam escape out of a cylinder.
Wiktionary
n. (''in an internal combustion engine'') a valve through which the products of combustion escape from the cylinder to the manifold
WordNet
n. a valve through which burned gases from a cylinder escape into the exhaust manifold
Usage examples of "exhaust valve".
When it started to swell I cut back the flow and barely cracked one exhaust valve.
Pitt stayed almost on top of March's web-footed fins, swimming into the stream of bubbles that trailed from the lieutenant's exhaust valve.
She curiously fingered the small metal flower below her collarbone, which was the air exhaust valve and control unit of the suit, as Mari explained how to operate it.
Two engine casings, but only one engine, even although that one engine was a special job fitted with an underwater bypass exhaust valve.
His right palm sealed the exhaust valve over his mouth as he expelled the air violently from his lungs, it rushed out of the vibrating sides of the mask clearing away any traces of gas.
It gives the explosive force of the volcano, if the exhaust valve of the geyser were to be closed, as the equivalent of a thousand pounds of TNT.