onion fly

noun

1
: a dipterous insect of the family Anthomyiidae whose larva feeds on onion bulbs
especially : an originally European insect (Hylemya antiqua) now widely distributed in America
2
: an insect (Tritoxa flexa) of the family Otitidae with habits like those of the onion fly

called also black onion fly

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near onion fly

Cite this Entry

“Onion fly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/onion%20fly. Accessed 14 Nov. 2024.

Love words? Need even more definitions?

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