Squirm \Squirm\, v. i. [imp. & p. p. Squirmed; p. pr. & vb. n. Squirming.]

[Cf. Swarm to climb a tree.]

To twist about briskly with contor?ions like an eel or a worm; to wriggle; to writhe.

Source: Webster's Revised Unabridged Dictionary (1913)