Definition of indian potato:
(n) :
Any of several kinds of North American plants with edible, starchy bulbs or other underground structures, such as mariposa lilies, groundnuts, etc., especially
(n) :
Apios americana (American potato-bean), a terrestrial plant native to eastern North America;
(n) :
Sagittaria latifolia (broadleaf arrowhead, duck potato), an aquatic plant native to North and South America.
(n) :
Orogenia spp. (now in Lomatium), a terrestrial plant native to western North America;