Short for Battle Buddy. A term used in the US Army to describe a good friend, someone you would trust with your life, and team mate in a military unit.

One who has a mania for music.

Battle is the Core system of Hiphop.

you battle on the Mic (Rap)
you battle on the floor (Breakdance)
you battle on turntables (Turntablism)
you battle on the wall (Graffiti)

When you find yourself competing using any one of these you are a true hiphop head not the shit talking, preaching muthafucking backpacker.

the one who keeps an eye on you for protection

an exclamation of impending awesomnity, perhaps a scuffle. This has been known to be the warcry of Daving Liu and all who have seen him.

To perform or do anything. Popularized by BC Tom from Atlanta.

Just like u've got the cell in Biology
and as u've got the atom in Physics,
u've got "battle" as the core of Hip-hop.
Hip-hop without MC's battling on the mic or DJ's battling on the turntable is incomplete!