the long, woody, hollow stem with stalked blades, of the grass Bambusa arundinaceae (= B. spinosa) of Poaceae family; a bamboo.

the east Indian arrow root plant Curcuma angustifolia of Zingiberaceae family, from the root of which a kind of easily digestible starch is extracted.

another plant of the same family Hitchenia caulina; Indian arrowroot.

the plant Maranta arundinaceae of Marantaceae family; West Indian arrowroot.