Source : Webster's Revised Unabridged Dictionary (1913)

Cling \Cling\ (kl[i^]ng), v. i. [imp. & p. p. {Clung}
   (kl[u^]ng), {Clong} (kl[o^]ng), Obs.); p. pr. & vb. n.
   {Clinging}.] [AS. clingan to adhere, to wither; akin to Dan.
   klynge to cluster, crowd. Cf. {Clump}.]
   To adhere closely; to stick; to hold fast, especially by
   twining round or embracing; as, the tendril of a vine clings
   to its support; -- usually followed by to or together.

         And what hath life for thee That thou shouldst cling to
         it thus?                                 --Mrs. Hemans.

Cling \Cling\, v. t.
   1. To cause to adhere to, especially by twining round or
      embracing. [Obs.]

            I clung legs as close to his side as I could.
                                                  --Swift.

   2. To make to dry up or wither. [Obs.]

            If thou speak'st false, Upon the next tree shalt
            thou hang alive, Till famine cling thee. --Shak.

Cling \Cling\, n.
   Adherence; attachment; devotion. [R.]

         A more tenacious cling to worldly respects. --Milton.

Source : WordNet®

cling
     n : fruit (especially peach) whose flesh adheres strongly to the
         pit [syn: {clingstone}]
     [also: {clung}]

cling
     v 1: come or be in close contact with; stick or hold together and
          resist separation; "The dress clings to her body"; "The
          label stuck to the box"; "The sushi rice grains cohere"
          [syn: {cleave}, {adhere}, {stick}, {cohere}]
     2: to remain emotionally or intellectually attached; "He clings
        to the idea that she might still love him."
     3: hold on tightly or tenaciously; "hang on to your father's
        hands"; "The child clung to his mother's apron" [syn: {hang}]
     [also: {clung}]