A thin volatile essential oil, C10H16, obtained by steam distillation or other means from the wood or exudate of certain pine trees and used as a paint thinner, solvent, and medicinally as a liniment. Also called oil of turpentine, spirit of turpentine. The sticky mixture of resin and volatile oil from which turpentine is distilled. A brownish-yellow resinous liquid obtained from the terebinth. To apply turpentine to or mix turpentine with. To extract turpentine from (a tree).