Where does “flash grenade” come from?
flash grenade (English) comes from English grenade, from French grenade, from Old French grenate, from Old French pomme grenate, from Italian pom granat, from Medieval Latin pomum granatum, from Latin pōmum, from Latin pōmus — from, off, back; off, away; off, from.
flash grenade (English): A flashbang
Ancestry of “flash grenade”, step by step