Man·da·rin 
(măndə-rĭn)
(măndə-rĭn)n.
1. Any of a group of related dialects of Chinese spoken principally in the north and west of China.
2. The official national standard spoken language of China, based on the Mandarin dialect spoken in and around Beijing. Also called Guoyu, Putonghua.
[From MANDARIN (from its use in administration in imperial China ).]