blackfly

noun
black·​fly | \ ˈblak-ˌflī How to pronounce blackfly (audio) \
plural blackflies or blackfly

Definition of blackfly

: any of various small dark-colored insects especially : any of a family (Simuliidae and especially genus Simulium) of bloodsucking dipteran flies whose larvae usually live in flowing streams

Examples of blackfly in a Sentence

Recent Examples on the Web Bug Shirt Untreated loose-knit fabrics provide no defense from mosquitoes, blackflies, and ticks. Andrew Skurka, Outside Online, 21 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blackfly.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of blackfly

15th century, in the meaning defined above

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The first known use of blackfly was in the 15th century

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Dictionary Entries Near blackfly

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Cite this Entry

“Blackfly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blackfly. Accessed 16 Jan. 2022.

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More Definitions for blackfly

blackfly

noun

English Language Learners Definition of blackfly

: a small fly that bites

blackfly

noun
black·​fly | \ ˈblak-ˌflī How to pronounce blackfly (audio) \
plural blackflies

Medical Definition of blackfly

: any of a family (Simuliidae) and especially genus Simulium of bloodsucking dipteran flies

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