tall oil
/ˈtɑːl ɔɪl/noun
A resinous mixture of fatty acids, resin acids, and plant sterols recovered when resinous wood pulp is digested during paper-making, used in making lubricants, paints, and adhesives.
Origin
Early 20th century; earliest use found in Chemical Abstracts. From German Tallöl (1909; from Swedish tallolja from tall pine + olja oil), with substitution of oil for the second element.