n Specifically, a particular variety of language; a restricted dialect used in a given historical period, context etc.
n An artistic style (for example, in art, architecture, or music); an instance of such a style.
n An expression peculiar to or characteristic of a particular language, especially when the meaning is illogical or separate from the meanings of its component words.
n (programming) A programming construct or phraseology generally held to be the most efficient, elegant or effective means to achieve a particular result or behavior.