[Onomatop.; cf. Ger.] (Entom.) Gad-fly, Cleg, Dipterous insect, with blood-sucking females. Tabanus bovinus [L.], fam. Tabanidse.
n. [Anglo-Saxon] A fly of various species, noted for buzzing about animals, and tormenting them by sucking their blood;—the gad-fly; the bot-fly.