1. terrestrial worm that burrows into and helps aerate soil
often surfaces when the ground is cool or wet
used as bait by anglers

Synonym: earthwormanglewormfishwormfishing wormnightwalkernightcrawlercrawlerdew wormred worm

2. larva of a mosquito

Synonym: wriggler

3. one who can't stay still (especially a child)

e.g. the toddler was a real wiggler on plane trips

Synonym: wrigglersquirmer