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The Collaborative International Dictionary
To play upon

Play \Play\, v. i. [imp. & p. p. Played; p. pr. & vb. n. Playing.] [OE. pleien, AS. plegian, plegan, to play, akin to plega play, game, quick motion, and probably to OS. plegan to promise, pledge, D. plegen to care for, attend to, be wont, G. pflegen; of unknown origin. [root]28. Cf. Plight, n.]

  1. To engage in sport or lively recreation; to exercise for the sake of amusement; to frolic; to spot.

    As Cannace was playing in her walk.
    --Chaucer.

    The lamb thy riot dooms to bleed to-day, Had he thy reason, would he skip and play!
    --Pope.

    And some, the darlings of their Lord, Play smiling with the flame and sword.
    --Keble.

  2. To act with levity or thoughtlessness; to trifle; to be careless.

    ``Nay,'' quod this monk, ``I have no lust to pleye.''
    --Chaucer.

    Men are apt to play with their healths.
    --Sir W. Temple.

  3. To contend, or take part, in a game; as, to play ball; hence, to gamble; as, he played for heavy stakes.

  4. To perform on an instrument of music; as, to play on a flute.

    One that . . . can play well on an instrument.
    --Ezek. xxxiii. 32.

    Play, my friend, and charm the charmer.
    --Granville.

  5. To act; to behave; to practice deception.

    His mother played false with a smith.
    --Shak.

  6. To move in any manner; especially, to move regularly with alternate or reciprocating motion; to operate; to act; as, the fountain plays.

    The heart beats, the blood circulates, the lungs play.
    --Cheyne.

  7. To move gayly; to wanton; to disport.

    Even as the waving sedges play with wind.
    --Shak.

    The setting sun Plays on their shining arms and burnished helmets.
    --Addison.

    All fame is foreign but of true desert, Plays round the head, but comes not to the heart.
    --Pope.

  8. To act on the stage; to personate a character. A lord will hear your play to-night. --Shak. Courts are theaters where some men play. --Donne. To play into a person's hands, to act, or to manage matters, to his advantage or benefit. To play off, to affect; to feign; to practice artifice. To play upon.

    1. To make sport of; to deceive.

      Art thou alive? Or is it fantasy that plays upon our eyesight.
      --Shak.

    2. To use in a droll manner; to give a droll expression or application to; as, to play upon words.