Tar·iff n.
 1. A schedule, system, or scheme of duties imposed by the government of a country upon goods imported or exported; as, a revenue tariff; a protective tariff; Clay's compromise tariff. (U. S. 1833).
 Note: ☞ The United States and Great Britain impose no duties on exports; hence, in these countries the tariff refers only to imports.
 Note: ☞ A tariff may be imposed solely for, and with reference to, the production of revenue (called a revenue tariff, or tariff for revenue, or for the artificial fostering of home industries (a projective tariff), or as a means of coercing foreign governments, as in case of retaliatory tariff.
 2. The duty, or rate of duty, so imposed; as, the tariff on wool; a tariff of two cents a pound.
 3. Any schedule or system of rates, changes, etc.; as, a tariff of fees, or of railroad fares.
 revenue tariff
      n : a tariff imposed to raise revenue