Source : Webster's Revised Unabridged Dictionary (1913)

Kink \Kink\, n. [D. kink a bend or turn, or Sw. kink.]
   1. A twist or loop in a rope or thread, caused by a
      spontaneous doubling or winding upon itself; a close loop
      or curl; a doubling in a cord.

   2. An unreasonable notion; a crotchet; a whim; a caprice.
      [Colloq.] --Cozzens.

Kink \Kink\, v. i. [imp. & p. p. {Kinked}; p. pr. & vb. n.
   {Kinking}.]
   To wind into a kink; to knot or twist spontaneously upon
   itself, as a rope or thread.

Kink \Kink\, n. [Cf. {Chincough}, {Kink-haust}.]
   A fit of coughing; also, a convulsive fit of laughter.
   [Scot.]

Source : WordNet®

kink
     n : a sharp bend in a line produced when a line having a loop is
         pulled tight [syn: {twist}, {twirl}]

kink
     v 1: curl tightly; "crimp hair" [syn: {crimp}, {crape}, {frizzle},
           {frizz}, {kink up}]
     2: form a curl, curve, or kink; "the cigar smoke curled up at
        the ceiling" [syn: {curl}, {curve}]