资料来源 : 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}.

资料来源 : WordNet®

revenue tariff
     n : a tariff imposed to raise revenue