adjective Of land, able to be plowed or tilled, capable of growing crops (traditionally contrasted with pasturable lands such as heaths).
adjective Of land, under cultivation (within any quinquennial period) for the production of crops sown and harvested within the same agricultural year (contrasted with permanently-cropped lands such as orchards).
noun Land that can be cropped (i.e., land that is arable); land that is being cropped (i.e., land that is in the cropping phase of a crop rotation, currently being cropped rather than used as pasture or fallow).