Internal revenue
Defined in 3 dictionaries — Ballentine's (1916), Bouvier (1914), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
All government revenue excepting duties on exports and imports.
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In the legislation and fiscal administration of the United States, revenue raised by the imposition of taxes and excises on domestic products or manufactures, and on domestic business and occupations, inheritance taxes, and stamp taxes; as broadly distinguished from "customs duties," i. e., duties or taxes on foreign commerce or on goods imported. See Rev. St. U. S. tit. 35 (U. S. Comp. St. 1901, p. 2038).
Defined under Internal in Black's Law Dictionary.