[1] : The Collaborative International Dictionary of English v.0.48

wriggle \wrig"gle\, v. i. imp.  p. p. wriggled; p. pr.  vb.
   n. wriggling. freq. of wrig, probably from oe. wrikken to
   move to and fro; cf. lg. wriggeln, d. wrikken, sw. vricka,
   dan. vrikke.
   to move the body to and fro with short, writhing motions,
   like a worm; to squirm; to twist uneasily or quickly about.
   1913 webster

         both he and successors would often wriggle in their
         seats,
         as long as the cushion lasted.           --swift.
   1913 webster
see also:
wriggled wriggling 

[2] : WordNet (r) 2.0

wriggling
     adj : having a twisting or snake-like or worm-like motion;
           "squirming boys"; "wiggly worms"; "writhing snakes"
           syn: squirming, twisting, wiggling, wiggly, wriggly,
            writhing
see also:
squirming twisting wiggling wiggly wriggly writhing 

Wriggling >> W Words
Wriggling, definition of term: Wriggling
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