Webster’s Revised Unabridged Dictionary · 1913
Unco
Un′co (ŭn̲′kō), a. [Scot. The same word as E. uncouth.] Unknown; strange, or foreign; unusual, or surprising; distant in manner; reserved. [Scot.]
Un′co, adv. In a high degree; to a great extent; greatly; very. [Prov. Eng. & Scot.]
Un′co, n. A strange thing or person. [Scot.]