Wiggle

Part of speech: noun (n.)

Act of wiggling; a wriggle. [Colloq.]

Part of speech: verb (v.)

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. [Prov. Eng. & Colloq. U. S.]