look up any word, like smh:
A peice of audio equipment, large enough, to be tactically useful in a combat situation.

A weapon of choice among the ancient Vikings.
"Dude he just knocked you out cold with that battle mixer, I wish i could find one of those."

"Bjarkmar Borgar, we must throw this battle mixer overboard, or we will sink."
by fred the viking February 12, 2012