Lewis & Short

vīcēsĭmārĭus, a, um, adj. [vicesimus], of or belonging to the twentieth part.

  1. I. Adj.: aurum, of the tax called vicesima (v. h. v.), Liv. 27, 10, 11.
  2. II. Subst.: vīcēsĭmā-rĭus, ii, m., a receiver of the vicesima, Petr. 65.