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Webster 1913 Edition

Noun.

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.

Masson.

Noun.

An idiom or peculiar expression of the natives of Scotland.

Scotticism ‎(plural Scotticisms)

A phrase or idiom peculiar to Scotland or Scottish people.
That, in short, in which the Scotticism of Scotsmen most intimately consists, is the habit of emphasis. — Masson.