• A sort of leather, prepared from the skin of the buffalo, dressed with oil, like chamois; also, the skins of oxen, elks, and other animals, dressed in like manner. • The color of buff; a light yellow, shading toward pink, gray, or brown. • A military coat, made of buff leather. • The grayish viscid substance constituting the buffy coat. See Buffy coat, under Buffy, a. • A wheel covered with buff leather, and used in polishing cutlery, spoons, etc. • The bare skin; as, to strip to the buff. • Made of buff leather. • Of the color of buff. • To polish with a buff. See Buff, n., 5. • To strike. • A buffet; a blow; -- obsolete except in the phrase "Blindman's buff." • Firm; sturdy.