n 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
n a person who has a nasty or unethical character undeserving of respect
n a software program capable of reproducing itself that can spread from one computer to the next over a network
n screw thread on a gear with the teeth of a worm wheel or rack
v to move in a twisting or contorted motion, (especially when struggling)