Source : Webster's Revised Unabridged Dictionary (1913)

Push \Push\, n.
   A crowd; a company or clique of associates; a gang. [Slang]

Push \Push\, n. [Probably F. poche. See {Pouch}.]
   A pustule; a pimple. [Obs. or Prov. Eng.] --Bacon.

Push \Push\, v. t. [imp. & p. p. {Pushed}; p. pr. & vb. n.
   {Pushing}.] [OE. possen, pussen, F. pousser, fr. L. pulsare,
   v. intens. fr. pellere, pulsum, to beat, knock, push. See
   {Pulse} a beating, and cf. {Pursy}.]
   1. To press against with force; to drive or impel by
      pressure; to endeavor to drive by steady pressure, without
      striking; -- opposed to {draw}.

            Sidelong had pushed a mountain from his seat.
                                                  --Milton.

   2. To thrust the points of the horns against; to gore.

            If the ox shall push a manservant or maidservant, .
            . . the ox shall be stoned.           --Ex. xxi. 32.

   3. To press or urge forward; to drive; to push an objection
      too far. `` To push his fortune.'' --Dryden.

            Ambition pushes the soul to such actions as are apt
            to procure honor to the actor.        --Spectator.

            We are pushed for an answer.          --Swift.

   4. To bear hard upon; to perplex; to embarrass.

   5. To importune; to press with solicitation; to tease.

   {To push down}, to overthrow by pushing or impulse.

Push \Push\, n.
   1. A thrust with a pointed instrument, or with the end of a
      thing.

   2. Any thrust. pressure, impulse, or force, or force applied;
      a shove; as, to give the ball the first push.

   3. An assault or attack; an effort; an attempt; hence, the
      time or occasion for action.

            Exact reformation is not perfected at the first
            push.                                 --Milton.

            When it comes to the push, 'tis no more than talk.
                                                  --L' Estrange.

   4. The faculty of overcoming obstacles; aggressive energy;
      as, he has push, or he has no push. [Colloq.]

   Syn: See {Thrust}.

Push \Push\, v. i.
   1. To make a thrust; to shove; as, to push with the horns or
      with a sword. --Shak.

   2. To make an advance, attack, or effort; to be energetic;
      as, a man must push in order to succeed.

            At the time of the end shall the kind of the south
            push at him and the king of the north shall come
            against him.                          --Dan. xi. 40.

            War seemed asleep for nine long years; at length
            Both sides resolved to push, we tried our strength.
                                                  --Dryden.

   3. To burst pot, as a bud or shoot.

   {To push on}, to drive or urge forward; to hasten.

            The rider pushed on at a rapid pace.  --Sir W.
                                                  Scott.

Source : WordNet®

push
     n 1: the act of applying force in order to move something away;
          "he gave the door a hard push"; "the pushing is good
          exercise" [syn: {pushing}]
     2: the force used in pushing; "the push of the water on the
        walls of the tank"; "the thrust of the jet engines" [syn:
        {thrust}]
     3: enterprising or ambitious drive; "Europeans often laugh at
        American energy" [syn: {energy}, {get-up-and-go}]
     4: an electrical switch operated by pressing a button; "the
        elevator was operated by push buttons"; "the push beside
        the bed operated a buzzer at the desk" [syn: {push button},
         {button}]
     5: an effort to advance; "the army made a push toward the sea"

push
     v 1: move with force, "He pushed the table into a corner" [syn: {force}]
          [ant: {pull}]
     2: press, drive, or impel (someone) to action or completion of
        an action; "He pushed her to finish her doctorate" [syn: {bear
        on}]
     3: make publicity for; try to sell (a product); "The salesman
        is aggressively pushing the new computer model"; "The
        company is heavily advertizing their new laptops" [syn: {advertise},
         {advertize}, {promote}]
     4: strive and make an effort to reach a goal; "She tugged for
        years to make a decent living"; "We have to push a little
        to make the deadline!"; "She is driving away at her
        doctoral thesis" [syn: {tug}, {labor}, {labour}, {drive}]
     5: press against forcefully without being able to move; "she
        pushed against the wall with all her strength"
     6: approach a certain age or speed; "She is pushing fifty"
        [syn: {crowd}]
     7: exert oneself continuously, vigorously, or obtrusively to
        gain an end or engage in a crusade for a certain cause or
        person; be an advocate for; "The liberal party pushed for
        reforms"; "She is crusading for women's rights"; "The Dean
        is pushing for his favorite candidate" [syn: {crusade}, {fight},
         {press}, {campaign}, {agitate}]
     8: sell or promote the sale of (illegal goods such as drugs);
        "The guy hanging around the school is pushing drugs"
     9: move strenuously and with effort; "The crowd pushed forward"
     10: make strenuous pushing movements during birth to expel the
         baby; "`Now push hard,' said the doctor to the woman"
         [syn: {press}]

Source : Free On-Line Dictionary of Computing

push
     
        1.  To put something onto a {stack} or {pdl}.
     
        Opposite: "{pop}".
     
        2.  {push media}.
     
        [{Jargon File}]
     
        (1997-04-10)