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, "How to Pack for a Hike," 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

Keep scrolling for more

Learn More about blackfly

Time Traveler for blackfly

Time Traveler

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

See more words from the same century

Statistics for blackfly

Cite this Entry

“Blackfly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blackfly. Accessed 20 Jan. 2021.

Keep scrolling for more

More Definitions for blackfly

blackfly

noun
How to pronounce blackfly (audio)

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

Comments on blackfly

What made you want to look up blackfly? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Words of Snow and Ice Quiz

  • image1037863653
  • Which of the following refers to thin, bending ice, or to the act of running over such ice?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!