noun
mayflies
• Syn: ↑Ephemeroptera, ↑order Ephemeroptera, ↑Ephemerida
• Hypernyms: ↑animal order
• Member Holonyms: ↑Insecta, ↑class Insecta, ↑Hexapoda, ↑class Hexapoda
• Member Meronyms: ↑ephemerid, ↑ephemeropteran, ↑Ephemeridae, ↑family Ephemeridae
Useful english dictionary. 2012.