gate \gate\ g=at, n. oe. yoghet, yogheat, 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.
      1913 webster

   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.
      1913 webster

            knowest thou the way to dover?
            both stile and gate, horse way and footpath. --shak.
      1913 webster

            opening a gate for a long war.        --knolles.
      1913 webster

   3. a door, valve, or other device, for stopping the passage
      of water through a dam, lock, pipe, etc.
      1913 webster

   4. script. the places which command the entrances or
      access; hence, place of vantage; power; might.
      1913 webster

            the gates of hell shall not prevail against it.
                                                  --matt. xvi.
                                                  18.
      1913 webster

   5. in a lock tumbler, the opening for the stump of the bolt
      to pass through or into.
      1913 webster

   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.
          1913 webster

   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 to stand in the gates, to occupy
      places or advantage, power, or defense.
      1913 webster
see also:
gate get geat git gate chamber gate channel 
gate hook gate money gate tender gate valva gate vein 
to break gates to stand in the gate to stand in the gates