YAMS: the tuberous roots of a climbing plant. They resemble sweet potatoes in general characteristics and are extensively used as food in the West Indies and other tropical regions. Large specimens frequently weigh thirty pounds or more. The two best varieties are the "Yampie" of Jamaica, and the "Barbados Yam," both of them of marked delicacy of flavor. Properly prepared by long boiling, they are to most palates superior to even the finest sweet potatoes.