A knife of sorts which is attached to the barrel of a gun. Used extensivly in wars with single shot weapons (i.e. Revolutionary War, American Civil War, ect...)
The current issue bayonet is the M9 multipurpose bayonet.
by KR February 24, 2005
To finish off any wounded soldier (half-empty beer) after the conclusion of a party.
Yaniv: FUCK YES!

Fez: What is it?

Yaniv: I FOUND A WOUNDED SOLDIER!

Keenan: Bayonet that shit!
by yeayuhhhboyeee January 30, 2010
penis
especially a large one
He will conquer new lands with his bayonet
by Emu Lgator January 11, 2004

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