1. a small bomb thrown by hand or launched mechanically.
▪ a glass receptacle containing chemicals which are released when the receptacle is thrown and broken, used for testing drains and extinguishing fires.
Word Originmid 16th century (in the sense ‘pomegranate’): from French, alteration of Old French (pome) grenate (see pomegranate), on the pattern of Spanish granada. The bomb was so named because it supposedly resembled a pomegranate in shape.