gaelic, a. [Gael. Gàidhealach, Gaelach, from Gàidheal, Gael, a Scotch Highlander.].
Of or pertaining to the Gael, esp. to the Celtic Highlanders of Scotland; as, the Gaelic language. [1913 Webster]
gaelic, n. [Gael. Gaelig, Gàilig.].
The language of the Gaels, esp. of the Highlanders of Scotland. It is a branch of the Celtic. [1913 Webster]