Source : Webster's Revised Unabridged Dictionary (1913)

Gate \Gate\ (g[=a]t), n. [OE. [yogh]et, [yogh]eat, giat, gate,
   door, AS. geat, gat, gate, door; akin to OS., D., & Icel. gat
   opening, hole, and perh. to E. gate a way, gait, and get, v.
   Cf. {Gate} a way, 3d {Get}.]
   1. A large door or passageway in the wall of a city, of an
      inclosed field or place, or of a grand edifice, etc.;
      also, the movable structure of timber, metal, etc., by
      which the passage can be closed.

   2. An opening for passage in any inclosing wall, fence, or
      barrier; or the suspended framework which closes or opens
      a passage. Also, figuratively, a means or way of entrance
      or of exit.

            Knowest thou the way to Dover? Both stile and gate,
            horse way and footpath.               --Shak.

            Opening a gate for a long war.        --Knolles.

   3. A door, valve, or other device, for stopping the passage
      of water through a dam, lock, pipe, etc.

   4. (Script.) The places which command the entrances or
      access; hence, place of vantage; power; might.

            The gates of hell shall not prevail against it.
                                                  --Matt. xvi.
                                                  18.

   5. In a lock tumbler, the opening for the stump of the bolt
      to pass through or into.

   6. (Founding)
      (a) The channel or opening through which metal is poured
          into the mold; the ingate.
      (b) The waste piece of metal cast in the opening; a sprue
          or sullage piece. [Written also {geat} and {git}.]

   {Gate chamber}, a recess in the side wall of a canal lock,
      which receives the opened gate.

   {Gate channel}. See {Gate}, 5.

   {Gate hook}, the hook-formed piece of a gate hinge.

   {Gate money}, entrance money for admission to an inclosure.
      

   {Gate tender}, one in charge of a gate, as at a railroad
      crossing.

   {Gate valva}, a stop valve for a pipe, having a sliding gate
      which affords a straight passageway when open.

   {Gate vein} (Anat.), the portal vein.

   {To break gates} (Eng. Univ.), to enter a college inclosure
      after the hour to which a student has been restricted.

   {To stand in the} {gate, or gates}, to occupy places or
      advantage, power, or defense.

Gate \Gate\, v. t.
   1. To supply with a gate.

   2. (Eng. Univ.) To punish by requiring to be within the gates
      at an earlier hour than usual.

Gate \Gate\, n. [Icel. gata; akin to SW. gata street, lane, Dan.
   gade, Goth. gatw["o], G. gasse. Cf. {Gate} a door, {Gait}.]
   1. A way; a path; a road; a street (as in Highgate). [O. Eng.
      & Scot.]

            I was going to be an honest man; but the devil has
            this very day flung first a lawyer, and then a
            woman, in my gate.                    --Sir W.
                                                  Scott.

   2. Manner; gait. [O. Eng. & Scot.]

Source : WordNet®

gate
     v 1: supply with a gate; "The house was gated"
     2: control with a valve or other device that functions like a
        gate
     3: restrict (school boys') movement to the dormitory or campus
        as a means of punishment

gate
     n 1: a door-like movable barrier in a fence or wall
     2: a computer circuit with several inputs but only one output
        that can be activated by particular combinations of inputs
        [syn: {logic gate}]
     3: total admission receipts at a sports event
     4: passageway (as in an air terminal) where passengers can
        embark or disembark

Source : Free On-Line Dictionary of Computing

GATE
     
        GAT Extended?  Based on {IT}.
     
        [Sammet 1969, p. 139].

gate
     
         A low-level {digital} logic component.  Gates
        perform {Boolean} {functions} (e.g. {AND}, {NOT}), store
        {bit}s of data (e.g. a {flip-flop}), and connect and
        disconnect various parts of the overall circuit to control the
        flow of data ({tri-state} buffer).
     
        In a {CPU}, the term applies particularly to the buffers that
        route data between the various {functional units}.  Each gate
        allows data to flow from one unit to another or enables data
        from one output onto a certain {bus}.
     
        (1999-09-02)