balance beam

noun
UK /ˈbæləns biːm/
US /ˈbæləns biːm/

A long, narrow bar that gymnasts walk and jump on.

She walked carefully across the balance beam without falling.


OTHER MEANINGS

2. A horizontal bar used in a balance scale.

The old scale had a balance beam with two pans hanging from it.

3. A narrow wooden or metal bar used in construction or machinery to keep things steady.

The workers used a balance beam to level the frame.

4. A beam that helps keep a vehicle or machine steady.

The tractor's balance beam kept it from tipping on the hill.