Source : Webster's Revised Unabridged Dictionary (1913)

Tariff \Tar"iff\, n.
   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}.

Tariff \Tar"iff\, n. [F. tarif; cf. Sp. & Pg. tarifa, It.
   tariffa; all fr. Ar. ta'r[=i]f information, explanation,
   definition, from 'arafa, to know, to inform, explain.]
   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.

   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. --Bolingbroke.

Tariff \Tar"iff\, v. t. [imp. & p. p. {Tariffed}; p. pr. & vb.
   n. {Tariffing}.]
   To make a list of duties on, as goods.

Source : WordNet®

tariff
     n : a government tax on imports or exports; "they signed a
         treaty to lower duties on trade between their countries"
         [syn: {duty}]
     v : charge a tariff; "tariff imported goods"