What is the meaning of Shrapnel?

An anti-personnel artillery shell used in World War I which carries a large number of individual bullets or balls close to the target and then ejects them to allow them to continue along the shell's trajectory and strike the target individually.

The bullets or balls from the aforementioned type of artillery shell.

Any shot, fragments, or debris thrown out by an exploding shell, bomb, or landmine.

Debris.

Loose change.

shrapnel

Source: wiktionary.org