may ‧ fly /ˈmeɪflaɪ/ BrE AmE noun ( plural mayflies ) [countable]
[ Date: 1600-1700 ; Origin: May + fly ; because it was believed it only lived in May ]
a small insect that lives near water, and only lives for a short time
may ‧ fly /ˈmeɪflaɪ/ BrE AmE noun ( plural mayflies ) [countable]
[ Date: 1600-1700 ; Origin: May + fly ; because it was believed it only lived in May ]
a small insect that lives near water, and only lives for a short time
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012