A Tincture

1. A pigment or other substance that colours or dyes.
2. A tint, or an added colour.
3. (heraldry) A colour or metal used in the depiction of a coat of arms.
4. An alcoholic extract of plant material, used as a medicine.
5. (humorous) A small alcoholic drink.
6. An essential characteristic.
7. The finer and more volatile parts of a substance, separated by a solvent; an extract of a part of the substance of a body communicated to the solvent.
8. A slight taste superadded to any substance.
9. A slight quality added to anything; a tinge.