bat fly


Definition of bat fly

  1. :  any of numerous small flies constituting the families Streblidae and Nycteribiidae, being ectoparasitic on bats, and having larvae completely developed in the body of the mother

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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of bat fly


Seen and Heard

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


to criticize severely

Get Word of the Day daily email!