\Stump"age\, n.
1. Timber in standing trees, -- often sold without the land
   at a fixed price per tree or per stump, the stumps being
   counted when the land is cleared. [Local, U.S.]
         Only trees above a certain size are allowed to be
         cut by loggers buying stumpage from the owners of
         land.                                 --C. S.
                                               Sargent.
2. A tax on the amount of timber cut, regulated by the price
   of lumber. [Local, U.S.] --The Nation.