worm

1. 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 (synset 101924944)
   is a type of: invertebrate - any animal lacking a backbone or notochord; the term is not used as a scientific classification
   subtypes:

   • helminth, parasitic worm - worm that is parasitic on the intestines of vertebrates especially roundworms and tapeworms and flukes
   • woodworm - a larva of a woodborer
   • acanthocephalan, spiny-headed worm - any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spines
   • arrowworm, chaetognath - any worm of the Chaetognatha; transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth
   • flatworm, platyhelminth - parasitic or free-living worms having a flattened body
   • nemertean, nemertine, proboscis worm, ribbon worm - soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract
   • beard worm, pogonophoran - slender animal with tentacles and a tubelike outer covering; lives on the deep ocean bottom
   • nematode, nematode worm, roundworm - unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic
   • annelid, annelid worm, segmented worm - worms with cylindrical bodies segmented both internally and externally
2. A person who has a nasty or unethical character undeserving of respect (synset 110811668)
   is a type of: disagreeable person, unpleasant person - a person who is not pleasant or agreeable
   same as: dirt ball, insect, louse
3. A software program capable of reproducing itself that can spread from one computer to the next over a network (synset 106598274)
   "worms take advantage of automatic file sending and receiving features found on many computers"
   is a type of: malevolent program - a computer program designed to have undesirable or harmful effects
4. Screw thread on a gear with the teeth of a worm wheel or rack (synset 104611871)
   is a type of: screw - a fastener with a tapered threaded shank and a slotted head
   is a part of: worm gear - gear consisting of a shaft with screw thread (the worm) that meshes with a toothed wheel (the worm wheel); changes the direction of the axis of rotary motion

1. To move in a twisting or contorted motion, (especially when struggling) (synset 201872363)
   "The prisoner writhed in discomfort"; "The child tried to wriggle free from his aunt's embrace"
   is a type of: move - move so as to change position, perform a nontranslational motion
   subtypes: wrench - make a sudden twisting motion
   same as: squirm, twist, wrestle, wriggle, writhe

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