Also found in: Dictionary, Wikipedia.
Unna bootWound care A compressive dressing for varicose veins or ulcers consisting of a paste of zinc oxide, gelatin, glycerin and water–applied to the lower leg, covered with a bandage, and applied outside the bandage
Unna (paste) boot
A bootlike dressing of the lower extremity made of layers of gauze and Unna's paste. It is used in treating chronic ulcers of the leg. See: illustration