flash-bang
n.β Β«While the flash-bang, as they are called in the trade, looks, operates and explodes much like a grenade, itβs meant to cause shock, not damage, police said.Β» ββState trooper is injured by flash-bang grenade” by Stephanie Heinatz Virginian Pilot (Norfolk, Va.) Aug. 4, 2005. (source: Double-Tongued Dictionary)