Tincture
in chemistry, the finer and more volatile parts of a substance, separated by a menstruum; an extract of a part of the substance of a body communicated to the menstruum. In heraldry, the name given to the colors, metals, or tints used for the field or ground of an emblazoned shield, including the two metals or and argent, or gold and silver, the several colors, and the furs.
In pharmacy, a colored solution of some animal or vegetable principle. Tinctures are very numerous, commencing with the tincture of aconite and the tincture of aloes. Different menstrua are employed; chiefly rectified spirit, proof spirit, compound spirit of ammonia, and spirit of ether.