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 | slang for sexual intercourse |
screw thread on a gear with the teeth of a worm wheel or rack | a fastener with a tapered threaded shank and a slotted head |
a software program capable of reproducing itself that can spread from one computer to the next over a network | a propeller with several angled blades that rotates to push against water or air |
a person who has a nasty or unethical character undeserving of respect | a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole |
| someone who guards prisoners |