GNU Collaborative International Dictionary of English

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1.       
   Squirm (skwẽrm), v. i. [imp. & p. p. Squirmed (skwẽrmd); 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]