noun
-
any of various families of four-winged, chiefly night-flying lepidopteran insects, that is attracted by light; a kind of moth.
-
any of a family (Lampyridae) of winged beetles, active at night, whose abdomens usu. glow with a luminescent light; a firefly.
-
any of various families (esp. Acrididae) of leaping, plant-eating orthopteran insects with powerful hind legs adapted for jumping; a grass-hopper.
-
any of gems which are believed to be inauspicious to have or to be worn.