A long, sturdy piece of squared timber or metal used to support the roof or floor of a building. The old barn was held up by several large wooden beams.
A beam of sunlight broke through the clouds and illuminated the valley.
A broad beam spread across his face when he saw the surprise.
The width of a ship at its widest point. The ship's beam was measured to ensure it could pass through the narrow channel.
A horizontal bar used in gymnastics, typically 4 inches wide and 16 feet long, on which gymnasts perform balancing exercises. The gymnast executed a flawless routine on the balance beam.
A directed stream of particles or energy other than visible light. The accelerator generates a beam of protons to test the material's resilience.