impaste

from The American Heritage® Dictionary of the English Language, 5th Edition.

• transitive verb To paint by applying thick layers of pigment.
• transitive verb Archaic To enclose with or as if with a paste or crust.

from The Century Dictionary.

• To make into paste; knead.
• In painting, to lay on thickly and boldly the colors of.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To knead; to make into paste; to concrete.
• transitive verb (Paint.), rare To lay color on canvas by uniting them skillfully together. Cf. Impasto.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To knead; to make into paste; to concrete.
• verb art To lay colour on canvas by uniting them skillfully together. See impasto.