Source : Webster's Revised Unabridged Dictionary (1913)

Oppidan \Op"pi*dan\, a. [L. oppidanus, fr. oppidum town.]
   Of or pertaining to a town. --Howell.

Oppidan \Op"pi*dan\, n.
   1. An inhabitant of a town.

   2. A student of Eton College, England, who is not a King's
      scholar, and who boards in a private family.