worm

any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae

screw thread on a gear with the teeth of a worm wheel or rack

a software program capable of reproducing itself that can spread from one computer to the next over a network

worms take advantage of automatic file sending and receiving features found on many computers

a person who has a nasty or unethical character undeserving of respect

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