A dialect spoken by the people of a particular region (esp. of France or French-speaking Switzerland), and differing substantially from the…

(originally) a language or language variety used in social situations; (now chiefly Linguistics) a language variety used by a particular social…

= group dialect n.

a form or variety of language used by the members of a particular social group; frequently contrasted with regional dialect.

Non-U persons or characteristics collectively; (also) non-U language.

A variety of a language used by a particular social group or class.

In a post-creole community, the social dialect most closely resembling the standard language; (also more generally) the most prestigious dialect…

In a post-creole community, the social dialect that is most closely related to the creole and furthest removed from the standard language; also…

Originally: (in a post-creole linguistic community) a social dialect or variety of a language having features in common with both the standard…