firefly
Pronunciation: /ˈfʌɪəflʌɪ/
noun ( plural fireflies)
- a soft-bodied beetle related to the glow-worm, the winged male and flightless female of which both have luminescent organs. The light is chiefly produced in flashes and typically functions as a signal between the sexes.
- Family Lampyridae: many species, especially in the tropics, and including the European Luciola lusitanica