A crop unit is a measure of land used for agricultural purposes. The four crossword solutions for the term crop unit are ACRE, CRAW, CORN, and REAP. An ACRE is a unit of area equal to 43, 560 square feet or 4, 047 square meters. A CRAW is a Scottish unit of land measurement equal to one quarter of an ACRE. CORN is a cereal grain that is grown in large quantities on farms and is used for food, feed, and fuel. REAP is the act of cutting and gathering a crop from the field.