WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / F / firefly firefly noun /faɪərflaɪ/ 2 syllables 7 letters Scrabble 16 WWF 16 Definitions noun nocturnal beetle common in warm regions having luminescent abdominal organs lightning bug noun tropical American click beetle having bright luminous spots fire beetlepyrophorus noctiluca Look “firefly” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →