- 大 adjectivebigbig; large; great; vast; high in scale or intensity; (of a person) old; adult
- Tianjin(bound form) an abbreviation or alternative name for 天津
- 口 noungatewayentrance, exit, or pass, such as a mountain pass, port, or gate in the Great Wall
- fortA fortified structure or position where large guns or artillery are stationed for defense; battery