Also found in: Dictionary, Thesaurus, Medical, Financial, Wikipedia.
gadfly,name for various biting flies, especially those that attack livestock, e.g., the botflybotfly,
common name for several families of hairy flies whose larvae live as parasites within the bodies of mammals. The horse botfly secretes an irritating substance that is used to attach its eggs to the body hairs of a horse, mule, or donkey.
..... Click the link for more information. and the horseflyhorsefly,
common name for the large hairy flies of the family Tabanidae. Male horseflies feed on pollen and nectar, but the females suck blood as well and are common pests of animals and sometimes of humans. The bites of many species are very painful. The larger horseflies, e.g.
..... Click the link for more information. .
any of various large dipterous flies, esp the horsefly, that annoy livestock by sucking their blood