Gadfly

English

Noun

gadfly (plural gadflies)

1. Any dipterous insect of the genus Oestrus, and allied group of botflies .
2. A fly of various species, of the family Tabanid[ae], noted for buzzing about animals, and tormenting them by sucking their blood
   • A horsefly
   • They are among the largest of two-winged or dipterous insects.
3. (slang) A bloodsucker
   • That person is a regular gadfly and takes advantage of his friend's generosity.

See also: