[syn: writhe, wrestle, wriggle, worm, squirm, twist]
The Collaborative International Dictionary of English v.0.48:
Squirm \Squirm\ (skw[~e]rm), v. i. [imp. & p. p. Squirmed
(skw[~e]rmd); p. pr. & vb. n. Squirming.] [Cf. Swarm to
climb a tree.]
To twist about briskly with contortions like an eel or a
worm; to wriggle; to writhe.
[1913 Webster]
WordNet (r) 3.0 (2006):
squirm
n 1: the act of wiggling [syn: wiggle, wriggle, squirm]
v 1: to move in a twisting or contorted motion, (especially when
struggling); "The prisoner writhed in discomfort"; "The
child tried to wriggle free from his aunt's embrace" [syn:
writhe, wrestle, wriggle, worm, squirm, twist]