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3 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Port n.
 1. A passageway; an opening or entrance to an inclosed place; a gate; a door; a portal. [Archaic]
 Him I accuse
 The city ports by this hath entered.   --Shak.
 Form their ivory port the cherubim
 Forth issuing.   --Milton.
 2. Naut. An opening in the side of a vessel; an embrasure through which cannon may be discharged; a porthole; also, the shutters which close such an opening.
    Her ports being within sixteen inches of the water.   --Sir W. Raleigh.
 3. Mach. A passageway in a machine, through which a fluid, as steam, water, etc., may pass, as from a valve to the interior of the cylinder of a steam engine; an opening in a valve seat, or valve face.
 Air port, Bridle port, etc. See under Air, Bridle, etc.
 Port bar Naut., a bar to secure the ports of a ship in a gale.
 Port lid Naut., a lid or hanging for closing the portholes of a vessel.
 Steam port, ∧ Exhaust port Steam Engine, the ports of the cylinder communicating with the valve or valves, for the entrance or exit of the steam, respectively.

From: Webster's Revised Unabridged Dictionary (1913)

 E·duc·tion n.  The act of drawing out or bringing into view.
 Eduction pipe, ∧ Eduction port. See Exhaust pipe and Exhaust port, under Exhaust, a.
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From: Webster's Revised Unabridged Dictionary (1913)

 Ex·haust, a.
 1. Drained; exhausted; having expended or lost its energy.
 2. 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.