[Gk. terebinthos.] The oily resin of the terebinth and some kinds of larch, fir, and pine. A cut is made through the bark of the tree, and the sap flows into jars. This is viscous like honey, and is crude turpentine. Oil of turpentine is distilled from crude turpentine, the solid part being yellow resin, used in making soap. Turpentine is used extensively in mixing paints and varnishes, and is also used in medicine.