The Collaborative International Dictionary of English v.0.48:

Likin \Li"kin`\, n. [Written also lekin.] [ Chin. li kin; li
   the thousandth part of a tael + kin money.]
   A Chinese provincial tax levied at many inland stations upon
   imports or articles in transit.
   [1913 Webster]

         "Likin," which used to be regarded as illegal, as one
         of the many, "squeezes" imposed by the mandarins, is,
         in Jamieson's opinion, just as legal as any other form
         of taxation.                             --A. R.
                                                  Colquhoun.
   [Webster 1913 Suppl.]