The Collaborative International Dictionary of English v.0.48:

Dangle \Dan"gle\ (d[a^][ng]"g'l), v. i. [imp. & p. p. Dangled;
   p. pr. & vb. n. Dangling.] [Akin to Dan. dangle, dial. Sw.
   dangla, Dan. dingle, Sw. dingla, Icel. dingla; perh. from E.
   ding.]
   To hang loosely, or with a swinging or jerking motion.
   [1913 Webster]

         He'd rather on a gibbet dangle
         Than miss his dear delight, to wrangle.  --Hudibras.
   [1913 Webster]

         From her lifted hand
         Dangled a length of ribbon.              --Tennyson.
   [1913 Webster]

   To dangle about or To dangle after, to hang upon
      importunately; to court the favor of; to beset.
      [1913 Webster]

            The Presbyterians, and other fanatics that dangle
            after them,
            are well inclined to pull down the present
            establishment.                        --Swift.
      [1913 Webster]

WordNet (r) 3.0 (2006):

dangling
    n 1: the act of suspending something (hanging it from above so
         it moves freely); "there was a small ceremony for the
         hanging of the portrait" [syn: suspension, dangling,
         hanging]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "dangling":
   bagging, baggy, careening, cascading, danglement, dependence,
   dependency, dependent, depending, drooping, easy, falling,
   falling loosely, flapping, flowing, hanging, hung, lax, loose,
   lurching, pendency, pendent, pending, pendulant, pendular,
   penduline, pendulosity, pendulous, pendulousness, pensile,
   pensileness, pensility, pitching, reeling, relaxed, rickety,
   rocking, rolling, shaky, slack, sloppy, streaming, suspended,
   suspense, suspension, swaying, swinging, tossing, weeping