any of many slender, soft-bodied animals, some segmented, that live by burrowing underground, in water, or as parasites, including the annelids, nemerteans, nematodes, platyhelminths, acanthocephalans, and gordian worms
popularly
an insect larva, as a caterpillar, grub, or maggot
any of several mollusks, as the shipworms
any of various wormlike animals, as a rotifer or a blindworm
Obsolete a snake, or serpent
an abject, wretched, or contemptible person
something that gnaws or distresses one inwardly, suggesting a parasitic worm: the worm of conscience
something thought of as being wormlike because of its spiral shape, etc.; specif.,
the thread of a screw
the coil of a still
an Archimedean screw or similar apparatus
a short, rotating screw that meshes with the teeth of a worm gear or a rack
Anat. any organ or part resembling a worm, as the vermiform process
Comput. an unauthorized, disruptive program, typically spread through communication lines, that creates copies of itself, thereby depleting a disk's or system's available memory