scŏtĭa, ae, f., = σκοτία, in architect.
I A hollow moulding in the base of a column , a scotia , Vitr. 3, 5, 2.—
II A gutter at the end of a cornice , Vitr. 4, 3, 6.
·noun Scotland. II. Scotia ·noun A concave molding used especially in classical architecture. ...
Webster's Dictionary of the English Language