noun (n)

• one who can't stay still (especially a child)(noun.person)

  Example:
  The toddler was a real wiggler on plane trips.
  

  Synonym:
  squirmer, wriggler
  

  source: wordnet30
• larva of a mosquito(noun.animal)

  Synonym:
  wriggler
  

  source: wordnet30
• terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers(noun.animal)

  Synonym:
  angleworm, crawler, dew worm, earthworm, fishing worm, fishworm, nightcrawler, nightwalker, red worm
  

  source: wordnet30
• The young, either larva or pupa, of the mosquito; -- called also wiggletail.(noun)

  source: webster1913