Part of speech: Noun
slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days
Categories: Ephemerid, Ephemeropteran
The word "mayfly" Many other languages have similar words:
May – A related word in the same word family.
fly – A related word in the same word family.
Tracking word families reveals how metaphors hardened into literal meanings over time.