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.