If you wiggle something or if it wiggles, it moves up and down or from side to side in small quick movements. She wiggled her finger Your baby will try to shuffle or wiggle along the floor. Wiggle is also a noun. a wiggle of the hips. to move with small movements from side to side or up and down, or to make something move like this (Probably from or wiggelen )
To move to and fro with a quick, jerking motion; to bend rapidly, or with a wavering motion, from side to side; to wag; to squirm; to wriggle; as, the dog wiggles his tail; the tadpole wiggles in the water