[n] the style of a particular artist or school or movement; "an imaginative orchestral idiom"
[n] a manner of speaking that is natural to native speakers of a language
[n] an expression whose meanings cannot be inferred from the meanings of the words that make it up
[n] the usage or vocabulary that is characteristic of a specific group of people; "the immigrants spoke an odd dialect of English"; "he has a strong German accent"
A language familiar to a group of people.
Ya'll comin' to da party tonight?
accent, artistic style, dialect, idiomatic expression, parlance, phrasal idiom, phrase, set phrase
baroque, baroqueness, classical style, classicism, expression, fashion, formulation, High Renaissance, locution, manner, mode, non-standard speech, order, patois, rococo, romanticism, saying, style, treatment, way