Definition of Indian rice in English:

Indian rice

noun

  • 1Any of several kinds of North American wild rice (genus Zizania); especially Z. aquatica, which grows in shallow water and was formerly an important food source (also called water oats).

  • 2A North American bunch grass, Oryzopsis hymenoides (rare).

Origin

Early 19th century; earliest use found in Hudson's Bay Miscellany.