noun
- any of numerous bloodsucking flies of the family Tabanidae, comprising the deer flies and horse flies.
adjective
- belonging or pertaining to the family Tabanidae.
noun
- any stout-bodied fly of the dipterous family Tabanidae, the females of which have mouthparts specialized for sucking blood: includes the horseflies
n.
- Any of various bloodsucking dipterous flies of the family Tabanidae, including the horseflies, that are involved in the transmission of several blood-borne parasites.