A substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating WordNet 3.0 & Open English WordNet

Paint is a liquid pigment that, after applied to a solid material and allowed to dry, adds a film-like layer, in most cases to create an image, known as a painting. Wikipedia

Pigmented liquid or paste used to apply color to a surface, often by artists. Wikipedia Disambiguation

pigmented liquid applied over a surface that dries as a solid film Wikidata

A mixture of pigment and a vehicle, such as oil or water, that together form a liquid or paste that can be applied to a surface to provide an adherent coating that imparts colour, protects the surface and/or gives the surface different features. OmegaWiki

A substance that is applied as a liquid or paste, and dries into a solid coating that protects or adds color/colour to an object or surface to which it has been applied. Wiktionary

Substance. Wiktionary (translation)