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Definitions of push:

noun:   the act of applying force in order to move something away
Example: "He gave the door a hard push"

noun:   an effort to advance
Example: "The army made a push toward the sea"

noun:   the force used in pushing
Example: "The push of the water on the walls of the tank"

noun:   an electrical switch operated by pressing a button
Example: "The elevator was operated by push buttons"

noun:   enterprising or ambitious drive
verb:   approach a certain age or speed
Example: "She is pushing fifty"

verb:   sell or promote the sale of (illegal goods such as drugs)
Example: "The guy hanging around the school is pushing drugs"

verb:   press, drive, or impel (someone) to action or completion of an action
Example: "He pushed her to finish her doctorate"

verb:   move with force, "He pushed the table into a corner"
verb:   press against forcefully without being able to move
Example: "She pushed against the wall with all her strength"

verb:   move strenuously and with effort
Example: "The crowd pushed forward"

verb:   make strenuous pushing movements during birth to expel the baby
Example: "`Now push hard,' said the doctor to the woman"

verb:   strive and make an effort to reach a goal
Example: "We have to push a little to make the deadline!"

verb:   make publicity for; try to sell (a product)
Example: "The salesman is aggressively pushing the new computer model"

verb:   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
Example: "The liberal party pushed for reforms"

name:  A surname (very rare: popularity rank in the U.S.: #79512)

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Alternative Terms
campaign bear press over-under drive propel ram shove thrust move-halt poke convex-concave muscle enter-exit push-pull-similar-words advertise ballyhoo popularize promote publicize pitch plug knowledge-ignorance deal peddle transactions-similar-words depart exit go leave quit retire withdraw blow split approach-retreat fare journey pass proceed remove travel wend butt crusade movement action-inaction seek-avoid encouragement fillip impetus impulse incentive inducement motivation prod spur stimulant stimulation stimulator stimulus cause-effect enterprise hustle initiative punch get-up-and-go gumption tired-fresh try-similar-words stack pop-computer-jargon cynical ambrose-bierce push-song push-bros-album push-gruntruck-album push-film push-nevada sydney-push push-5 jaime-pressly killing-the-dragon sapphire-author force-power mike-dierickx blackjack sports-betting double-push push-professional-wrestling push-technology push-to-talk push-processing cost-push-inflation rainbow-push rocks-push m-ni-re-s-disease-3 push-aerator push-mower-cover push-pins