![tall oil tall oil](https://www.tekportal.net/wp-content/uploads/2018/11/tall-oil.jpg)
noun
- a resinous secondary product resulting from the manufacture of chemical wood pulp: used in the manufacture of soaps, paints, etc.
noun
- any of various oily liquid mixtures obtained by acidifying the liquor resulting from the treatment of wood pulp with sodium hydroxide: it contains chiefly rosin acids and fatty acids and is used in making soaps and lubricants