oil painting

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

• noun A painting done in oil paints.
• noun The art or practice of painting with oils.

from The Century Dictionary.

• noun The art of painting with pigments mixed with a drying-oil, as poppy-, walnut-, or linseed-oil.
• noun A picture painted in oil-colors.

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

• noun A painting done with oil paints.
• noun uncountable The art of painting with oil paints.
• noun humorous, with negative A physically attractive person

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a picture painted with oil paints
• noun the art or method of painting with oil paints