Meaning

noun shell containing lead pellets that explodes in flight

originFrom Shrapnel. Named after British army officer Henry Shrapnel (1761–1842) who invented an anti-personnel shell that transported a large number of bullets to the target before releasing them, at a far greater distance than rifles could fire the bullets individually. The surname is likely a metathesized form of Charbonnel, a diminutive of Old French charbon (“charcoal”) in reference to hair color,…

Etymology from Wiktionary, CC BY-SA 3.0