Definition of nostril fly in English:

nostril fly

Line breaks: nos|tril fly

noun

A parasitic fly that lays its eggs in the nostrils of sheep, goats, and deer. The larvae develop in the nasal cavities before being sneezed out.
  • The sheep nostril fly or sheep bot (Oestrus ovis) and the deer nostril flies (genus Cephenemyia), both in the family Oestridae

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day setose
Pronunciation: ˈsiːtəʊs
adjective
bearing bristles or setae; bristly