wiggler

from WordNet (r) 3.0 (2006)

wiggler
    n 1: one who can't stay still (especially a child); "the toddler
         was a real wiggler on plane trips" [syn: {wiggler},
         {wriggler}, {squirmer}]
    2: larva of a mosquito [syn: {wiggler}, {wriggler}]
    3: terrestrial worm that burrows into and helps aerate soil;
       often surfaces when the ground is cool or wet; used as bait
       by anglers [syn: {earthworm}, {angleworm}, {fishworm},
       {fishing worm}, {wiggler}, {nightwalker}, {nightcrawler},
       {crawler}, {dew worm}, {red worm}]

from The Collaborative International Dictionary of English v.0.48

Gnatworm \Gnat"worm`\, n. (Zool.)
   The aquatic larva of a gnat; -- called also, colloquially,
   {wiggler}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Wiggler \Wig"gler\, n. (Zool.)
   The young, either larva or pupa, of the mosquito; -- called
   also {wiggletail}.
   [1913 Webster]