tick·le /ˈtɪkəl/
  胳肢,癢(vt.)胳肢,使發癢,使快樂,逗樂(vi.)覺得癢,使人癢
  tick·le /ˈtɪkəl/ 動詞
  發癢,瘙癢
  Tic·kle, a.
  1. Ticklish; easily tickled. [Obs.]
  2. Liable to change; uncertain; inconstant. [Obs.]
     The world is now full tickle, sikerly.   --Chaucer.
     So tickle is the state of earthy things.   --Spenser.
  3. Wavering, or liable to waver and fall at the slightest touch; unstable; easily overthrown. [Obs.]
     Thy head stands so tickle on thy shoulders, that a milkmaid, if she be in love, may sigh it off.   --Shak.
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  Tic·kle v. t. [imp. & p. p. Tickled p. pr. & vb. n. Tickling ]
  1. To touch lightly, so as to produce a peculiar thrilling sensation, which commonly causes laughter, and a kind of spasm which become dangerous if too long protracted.
     If you tickle us, do we not laugh?   --Shak.
  2. To please; to gratify; to make joyous.
     Pleased with a rattle, tickled with a straw.   --Pope.
  Such a nature
  Tickled with good success, disdains the shadow
  Which he treads on at noon.   --Shak.
  Tic·kle, v. i.
  1. To feel titillation.
  He with secret joy therefore
  Did tickle inwardly in every vein.   --Spenser.
  2. To excite the sensation of titillation.
  tickle
       n 1: a cutaneous sensation often resulting from light stroking
       2: the act of tickling [syn: tickling, titillation]
       v 1: touch (a body part) lightly so as to excite the surface
            nerves and cause uneasiness, laughter, or spasmodic
            movements [syn: titillate, vellicate]
       2: feel sudden intense sensation or emotion; "he was thrilled
          by the speed and the roar of the engine" [syn: thrill, vibrate]
       3: touch or stroke lightly; "The grass tickled her calves"