v. i. - To move the body to and fro with short, writhing motions, like a worm; to squirm; to twist uneasily or quickly about.
v. t. - To move with short, quick contortions; to move by twisting and squirming; like a worm.
a. - Wriggling; frisky; pliant; flexible.
n. - Act of wriggling; a short or quick writhing motion or contortion.