A balance beam is a long, narrow, and elevated piece of equipment used in gymnastics. It is like a long, skinny beam that gymnasts walk, jump and perform tricks on, while trying to stay balanced. Full definition
It requires you to balance the weight on balance beams, which can be done significantly easier when playing in multiplayer mode. (zeldadungeon.net)
In a competition over an army assault course that requires fitness, the ability to pull yourself over high walls, climb ropes and cross balance beams. (unique-bodyweight-exercises.com)