Definitions for tall oiltɑl
Random House Webster's College Dictionary
a resinous secondary product from the manufacture of chemical wood pulp.
Origin of tall oil:
1925–30; < Sw tallolja, der. of tall pine
an oil derived from wood pulp and used in making soaps or lubricants
A dark yellow resinous acidic oil obtained as a byproduct during the pulping of pine; it is used in the manufacture of soaps and lubricants