from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various fragile winged insects of the order Ephemeroptera that develop from aquatic nymphs and live in the adult stage no longer than a few days. Also called dayfly, shadfly.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of many fragile insects, of the order Ephemeroptera, that develop in fresh water, and live very briefly as adults.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days
Sorry, no etymologies found.