Bo

Bo may be:

An east Asian quarterstaff, see bo (weapon)
A tree, see peepul
A city in Sierra Leone, see Bo, Sierra Leone
ISO country code for Bolivia
Bo is the UIC classification for the railroad locomotive wheel arrangement known as 0-4-0 in the Whyte notation; a locomotive with two powered axles (and thus four wheels) in which the axles are independently powered (e.g. by seperate traction motors)