worm

To move in a twisting or contorted motion, (especially when struggling).

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

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.

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”

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