Wu Chinese; Shanghainese
Refers to the group of Chinese dialects spoken in the Shanghai region and surrounding areas, of which Shanghainese is the most prominent representative.
See also: 呉 (ご)
Wu Chinese is a group of Chinese dialects spoken mainly around Shanghai.
He speaks Shanghainese, a variety of Wu Chinese, fluently.
From 呉 (Wu, an ancient Chinese state/region) + 語 (language). The name derives from the historical Wu region, where these dialects are spoken.