any of the minute, black gnats of the dipterous family Simuliidae, having aquatic larvae.
- Also called buffalo gnat.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use black fly in a sentence
The blackfly and mosquito attack both man and beast in maddening millions.Animal Sanctuaries in Labrador | William Wood
British Dictionary definitions for blackfly (1 of 2)
a black aphid, Aphis fabae, that infests beans, sugar beet, and other plants: Also called: bean aphid
British Dictionary definitions for black fly (2 of 2)
any small blackish stout-bodied dipterous fly of the family Simuliidae, which sucks the blood of man, mammals, and birds: See also buffalo gnat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012