\Sin"gle tax`\ (Pol. Econ.)
A tax levied upon land alone, irrespective of improvements,
-- advocated by certain economists as the sole source of
public revenue.
      Whatever may be thought of Henry George's single-tax
      theory as a whole, there can be little question that a
      relatively higher assessment of ground rent, with
      corresponding relief for those who have made
      improvements, is a much-needed reform.   --A. T.
                                               Hadley.