Definition of hair worm in US English:

hair worm

noun

  • another term for horsehair worm
    • ‘The crickets and beetles and crabs and shrimp are infected when they eat flies containing hair worm larvae.’
    • ‘Foals are particularly susceptible to hair worm infection.’
    • ‘Foals are very open to infection by hair worms, so broodmares should be dewormed and moved to clean pastures.’
    • ‘Damage caused by the hair worm can be worsened by other worms in the system.’
    • ‘The hair worms are found living in the sediments, or occasionally on the rocks, and while never especially speedy, they are capable of moving from place to place.’

Pronunciation

hair worm

/ˈher ˌwərm/