The syntactical or structural form peculiar to any language; the genius or cast of a language.
An expression conforming or appropriate to the peculiar structural form of a language; in extend use, an expression sanctioned by usage, having a sense peculiar to itself and not agreeing with the logical sense of its structural form; also, the phrase forms peculiar to a particular author.
Many parents and teachers have become irritated to the point of distraction at the way the weed-style growth of 'like' has spread through the idiom of the young. And it's true that in some cases the term has become simultaneously a crutch and a tic, driving out the rest of the vocabulary as candy expels vegetables. Christopher Hitchens
Each person is an idiom unto himself, an apparent violation of the syntax of the species. Gordon W. Allport
You have a political and media elite who have an idiom by which they describe politics. It's highly, highly polarised. It's right, left, red, blue, up, down, victorious, crushed. Nick Clegg
As advertising blather becomes the nation's normal idiom, language becomes printed noise. George Will
Wizards was my homage to Tolkien in the American idiom. I had read Tolkien, understood Tolkien, and wanted to do a sort of fantasy for American kids, and that was Wizards. Ralph Bakshi