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horse fly

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noun
any bloodsucking, usually large fly of the family Tabanidae, especially of the genus Tabanus, a serious pest of horses, cattle, etc.
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Origin of horse fly

1350–1400; Middle English horsfleeye
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use horse fly in a sentence

British Dictionary definitions for horse fly

horsefly
/ (ˈhɔːsˌflaɪ) /

noun plural -flies
any large stout-bodied dipterous fly of the family Tabanidae, the females of which suck the blood of mammals, esp horses, cattle, and manAlso called: gadfly, cleg
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
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