Source : Webster's Revised Unabridged Dictionary (1913)

Agricultural \Ag`ri*cul"tur*al\, a.
   Of or pertaining to agriculture; connected with, or engaged
   in, tillage; as, the agricultural class; agricultural
   implements, wages, etc. -- {Ag`ri*cul"tur*al*ly}, adv.

   {Agricultural ant} (Zo["o]l.), a species of ant which gathers
      and stores seeds of grasses, for food. The remarkable
      species ({Myrmica barbata}) found in Texas clears circular
      areas and carefully cultivates its favorite grain, known
      as ant rice.

Source : WordNet®

agricultural
     adj 1: relating to or used in or promoting agriculture or farming;
            "agricultural engineering"; "modern agricultural (or
            farming) methods"; "agricultural (or farm) equipment";
            "an agricultural college"
     2: relating to rural matters; "an agrarian (or agricultural)
        society"; "farming communities" [syn: {agrarian}, {farming(a)}]