beam
1. A crossbar that supports a roof on a wall or a column, generally referring to a horizontal strip-shaped load-bearing member: a house. Dong ~.
2. bridge: bridge ~. Tianjin ~ (ferry and bridge, referring to the door of learning).
3. The part of an object, body or other object that rises in the middle: nose. Mountain ~. Car ~
4. the name of China during the warring States period.
5. Chinese dynasty names.
6. Last name.