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 hand tool that is used to hold or twist a nut or bolt |
screw thread on a gear with the teeth of a worm wheel or rack | a jerky pulling movement |
a software program capable of reproducing itself that can spread from one computer to the next over a network | a sharp strain on muscles or ligaments |
a person who has a nasty or unethical character undeserving of respect | |