Land which when farmed in adequate size units for the prevailing climatic and economic setting, and provided with the essential on-farm improvements of removing vegetation, leveling, soil reclamation, drainage, and irrigation related facilities, will generate sufficient income under irrigation to pay all farm production expenses; provide a reasonable return to the farm family's labor, management, and capital; and at least pay the operation, maintenance, and replacement costs of associated irrigation and drainage facilities
[ 'ar-&-b&l ] (adjective.) 15th century. Middle French or Latin; Middle French, from Latin arabilis, from arare to plow; akin to Old English erian to plow, Greek aroun.