Source : Webster's Revised Unabridged Dictionary (1913)

Presidial \Pre*sid"i*al\, Presidiary \Pre*sid"i*a*ry\, a. [L.
   praesidialis and praesidiarius, fr. praesidium a presiding
   over, defense, guard. See {Preside}.]
   Of or pertaining to a garrison; having a garrison.

         There are three presidial castles in this city.
                                                  --Howell.