Definify.com

Webster 1913 Edition

Firefly

Fire′flyˊ

,

Noun.

;

pl.

Fireflies

.

(Zool.)

Any luminous winged insect, esp. luminous beetles of the family

Lampyridæ

.

Webster 1828 Edition

Firefly

FI'REFLY

,

Noun.

A species of fly which has on its belly a spot which shines; and another species which emits light from under its wings, as it flies.