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black fly

noun
  1. any of the minute, black gnats of the dipterous family Simuliidae, having aquatic larvae.
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Origin of black fly

First recorded in 1600–10
Also called buffalo gnat.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for black fly

Historical Examples

  • Dinky-Dunk, I notice, is as restive as a bull-moose in black-fly season.

    The Prairie Child

    Arthur Stringer

  • This would explain the rle of the eosinophiles in the black-fly lesion.

    Handbook of Medical Entomology

    William Albert Riley

  • Aphides or black-fly may be destroyed by tobacco dust and syringing well with an infusion of soft soap.

  • There was some kind of an animal inside my shirt, and one that made a mosquito, black-fly, or flea seem tame.

  • The actual nature of the toxic agent in the black-fly is left a matter of speculation.

    Handbook of Medical Entomology

    William Albert Riley


British Dictionary definitions for black fly

black fly

noun
  1. any small blackish stout-bodied dipterous fly of the family Simuliidae, which sucks the blood of man, mammals, and birdsSee also buffalo gnat
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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

black fly in Medicine

black fly

n.
  1. Any of various small dark humpbacked flies of whom the females are aggressive biters and serve as vectors in the transmission of onchocerciasis.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.