Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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computer worm a computer program that can propagate, by itself, from host to host, often causing loss of memory space and sometimes minor harm to a system.
Guinea worm a long thin parasitic nematode worm of tropical Africa and Asia that lives under the skin of humans and other mammals.
worm gear a mechanism consisting of a shaft with a helical thread that meshes with a toothed wheel, usu. set at right angles to each other. [2 definitions]
worm wheel the gear wheel in a worm gear.
worm-eaten gnawed or pocked by, or as though by, worms; full of holes. [2 definitions]