Hand grenades, also known as fragmentation grenades, are explosive devices that can be thrown or launched to cause damage to their intended targets. However, there are several synonyms that can be used to describe this weapon of war. Some of the alternatives are pineapple, potato masher, egg grenade, and lemon grenade. Others include Mills bomb, stick grenade, rifle grenade, and smoke grenade. Each of these synonyms was given based on their shape, size, and usage. Regardless of what it's called, a hand grenade remains a dangerous weapon that can cause significant harm or even death when used irresponsibly.