What is the meaning of Turpentine?

Any oleoresin secreted by the wood or bark of certain trees.

A volatile essential oil now obtained from such oleoresin of from the wood of pine trees by steam distillation; a complex mixture of monoterpenes; now used as a solvent and paint thinner.

A turpentine tree (genus Syncarpia).

To drain resin from (a tree) for use in making turpentine.

Source: wiktionary.org