FIREFLY
Meaning of FIREFLY in English
fire ‧ fly /ˈfaɪəflaɪ $ ˈfaɪr-/ BrE AmE noun ( plural fireflies ) [countable]
an insect with a tail that shines in the dark
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012