What is the meaning of wiggler?

noun

• One who can't stay still (especially a child. )
  • usage: "the toddler was a real wiggler on plane trips"
  • synonyms: wriggler, squirmer
• Larva of a mosquito.
  • synonyms: wriggler
• Terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers.
  • synonyms: earthworm, angleworm, fishworm, fishing worm, nightwalker, nightcrawler, crawler, dew worm, red worm