hairworm

noun

1. any small, slender worm of the family Trichostrongylidae, parasitic in the alimentary canals of various animals.

noun

1. any hairlike nematode worm of the family Trichostrongylidae, such as the stomach worm, parasitic in the intestines of vertebrates
2. Also called: horsehair worm any very thin long worm of the phylum (or class) Nematomorpha, the larvae of which are parasitic in arthropods