Hand grenade

A hand grenade is a small hand-held explosive device designed to be thrown. The word "grenade" is derived from the Old French (pome) grenate ("pomegranate"), in reference to the general size of early grenades, and because its shrapnel pellets reminded soldiers of the seeds of this fruit. Grenadiers were originally soldiers who specialized in throwing grenades.

Not all grenades are thrown by hand. Several types are fired from rifles or purpose-designed grenade launchers. For example, tear gas grenades used in riot control are fired from riot guns, and the M203 is a grenade launcher that can be fitted to several types of rifles such as the M4 carbine, in which it is underslung beneath the barrel.