The Collaborative International Dictionary
fragmentation grenade \fragmentation grenade\ n. (Mil.) A type of hand grenade designed to burst into multiple fragments upon detonation of the explosive charge; the fragments fly away at high velocity, killing or wounding persons nearby. Contrasted to concussion grenade. The common type of fragmentation grenade used by the American military was sometimes jocosely referred to as a pineapple from its reticulated surface appearance, resembling that of the fruit.
Wiktionary
n. (context military English) An anti-personnel weapon, thrown or otherwise propelled, designed to disperse shrapnel upon exploding.
Wikipedia
A fragmentation grenade (commonly known as frag or frag grenade) is a high explosive anti-personnel grenade that is designed to disperse small projectiles or fragments on detonation. The body may be made of hard plastic or steel. The outer casing and/or a fragmentation matrix consisting of notched wire and preformed fragments (spherical or otherwise) provide the projectiles. When the word grenade is used without specification, and context does not suggest otherwise, it is generally assumed to refer to a fragmentation grenade.
Fragmentation grenades can be divided into two main types, defensive and offensive, where the former are designed to be used from a position of cover, (e.g. in a slit trench or behind a suitable wall,) and have an effective radius greater than the distance it can be thrown, while the latter are for assaulting troops and have a smaller effective fragmentation radius to limit risk of fragments hitting the thrower.
The Mills bombs and the Soviet F1 are examples of defensive grenades. The Dutch V40, Swiss HG 85, and US M67 are examples of offensive grenades.
Fragments may travel more than 200 m.
Usage examples of "fragmentation grenade".
I freed a fragmentation grenade from my harness, pulled the pin, flipped the lever off then counted to two.
He regretted that it couldn't be fired from the launcher like a fragmentation grenade, regretted it a great deal.
A fragmentation grenade, dangerous to the techs and the equipment, bounced up out of the hole but fell back onto the fifth story before it exploded.
Probably had poison slipped in our food or a fragmentation grenade hidden in the toilet.
He slipped a 40mm high-explosive fragmentation grenade into the launcher.
He pulled out a fragmentation grenade, pulled the pin and tossed it as hard as he could down the corridor.
At the opposite corner, Corporal Petty armed a fragmentation grenade, released the spoon, and threw the grenade down the corridor between the corners.
The assumption was that the terrorist had more than one weapon, and the backup was frequently a fragmentation grenade.
He pulled the pin on the M67 fragmentation grenade and heaved it down the slope of the hill.
For producing casualties, it was inferior to a fragmentation grenade, but it could kill, especially up close.