Indian potato

Noun

 * 1) Any of several kinds of North American plants with edible, starchy bulbs or other underground structures, such as mariposa lilies, groundnuts, etc., especially
 * 2) , a terrestrial plant native to eastern North America;
 * 3)  spp. (now in ), a terrestrial plant native to western North America;
 * 4)  (, duck potato), an aquatic plant native to North and South America.