4. (Med.)
Defn: The grayish viscid substance constituting the buffy coat. See
Buffy coat, under Buffy, a.
5. (Mech.)
Defn: A wheel covered with buff leather, and used in polishing cutlery, spoons, etc.
6. The bare skin; as, to strip to the buff. [Colloq.] To be in buff is equivalent to being naked. Wright.
BUFF
Buff, a.
1. Made of buff leather. Goldsmith.
2. Of the color of buff. Buff coat, a close, military outer garment, with short sleeves, and laced tightly over the chest, made of buffalo skin, or other thick and elastic material, worn by soldiers in the 17th century as a defensive covering. — Buff jerkin, originally, a leather waistcoat; afterward, one of cloth of a buff color. [Obs.] Nares. — Buff stick (Mech.), a strip of wood covered with buff leather, used in polishing.
BUFF
Buff, v. t.
Defn: To polish with a buff. See Buff, n., 5.