Bombshell is a compound of bomb + shell, originally meaning an explosive artillery shell, later figuratively a shocking or sensational thing. Bomb derives via French bombe from Italian bomba, from Latin bombus ('booming sound'). The historical trail runs through bombus in Latin and bombos in Ancient Greek. Morphologically, bombshell is transparent: it is a compound of bomb + shell, originally meaning an explosive artillery shell, later figuratively a shocking or sensational thing. Used as a noun, bombshell now means "a sudden and shocking piece of news; also a strikingly attractive person", so the present definition can be read against the older forms and meanings. The same lexical family is also visible in related forms such as bomb and shell. The result is a borrowed or transmitted form whose modern spelling carries a compact record of its route into English.