Bk

An abbreviated way to write "back," as in, "Im bk!"

A common way to refer to Burger King, a popular burger-based fast food restaurant.

A baseball statistic used to keep track of the number of balks by a pitcher.

A balk is when the pitcher makes an illegal motion, like pretending to pitch with no intention of doing so, to deceive a baserunner. A balk results in the baserunner being awarded the next base for free, so if he was on 2nd base he would go to third base.