Webster’s Revised Unabridged Dictionary · 1913
Erse
Erse (ẽrs), n. [A modification of Irish, OE. Irishe.] A name sometimes given to that dialect of the Celtic which is spoken in the Highlands of Scotland; — called, by the Highlanders, Gaelic.
Erse, a. Of or pertaining to the Celtic race in the Highlands of Scotland, or to their language.