Scotticism n. An idiom, or mode of expression, peculiar to Scotland or Scotchmen. "That, in short, in which the Scotticism of Scotsmen most intimately consists, is the habit of emphasis."
... precisely the advantage of our linguistic position that it so enormously enlarges the stock of semi-synonyms at our disposal. To reject a forcible Americanism merely because we could, at a pinch, get on without it, is—Mr. Lang will understand the forcible Scotticism—to ... — America To-day, Observations and Reflections • William Archer