A sleeveless jacket, usually leather; a long waistcoat.
A type of men's garment popular in the sixteenth and seventeenth centuries: a close-fitting collarless jacket, with or without sleeves.
A warm coat, often an overcoat, fit to be worn in winter
An animal's seasonal appearance in winter, notably thicker and/or otherwise camouflaged plumage or fur after (often autumnal) moulting