Source : Webster's Revised Unabridged Dictionary (1913)

Flirt \Flirt\, v. i.
   1. To run and dart about; to act with giddiness, or from a
      desire to attract notice; especially, to play the
      coquette; to play at courtship; to coquet; as, they flirt
      with the young men.

   2. To utter contemptuous language, with an air of disdain; to
      jeer or gibe. [Obs.] --Beau. & Fl.

Flirt \Flirt\, n.
   1. A sudden jerk; a quick throw or cast; a darting motion;
      hence, a jeer.

            Several little flirts and vibrations. --Addison.

            With many a flirt and flutter.        --E. A. Poe.

   2. [Cf. LG. flirtje, G. flirtchen. See {Flirt}, v. t.] One
      who flirts; esp., a woman who acts with giddiness, or
      plays at courtship; a coquette; a pert girl.

            Several young flirts about town had a design to cast
            us out of the fashionable world.      --Addison.

Flirt \Flirt\, a.
   Pert; wanton. [Obs.]

Flirt \Flirt\, v. t. [imp. & p. p. {Flirted}; p. pr. & vb. n.
   {Flirting}.] [Cf. AS. fleard trifle, folly, fleardian to
   trifle.]
   1. To throw with a jerk or quick effort; to fling suddenly;
      as, they flirt water in each other's faces; he flirted a
      glove, or a handkerchief.

   2. To toss or throw about; to move playfully to and fro; as,
      to flirt a fan.

   3. To jeer at; to treat with contempt; to mock. [Obs.]

            I am ashamed; I am scorned; I am flirted. --Beau. &
                                                  Fl.

Source : WordNet®

flirt
     n 1: a seductive woman who uses her sex appeal to exploit men
          [syn: {coquette}, {vamp}, {vamper}, {minx}, {tease}, {prickteaser}]
     2: playful behavior intended to arouse sexual interest [syn: {flirting},
         {flirtation}, {coquetry}, {dalliance}, {toying}]
     v 1: talk or behave amorously, without serious intentions; "The
          guys always try to chat up the new secretaries"; "My
          husband never flirts with other women" [syn: {chat up},
          {dally}, {butterfly}, {coquet}, {coquette}, {romance}, {philander},
           {mash}]
     2: behave carelessly or indifferently; "Play about with a young
        girl's affection" [syn: {dally}, {toy}, {play}]