Oxalis crenata n 1: South American wood sorrel cultivated for its edible tubers [syn: {oca}, {oka}, {Oxalis tuberosa}, {Oxalis crenata}]
Oca \O"ca\, n. [Sp.] (Bot.) A Peruvian name for certain species of {Oxalis} ({Oxalis crenata}, and {Oxalis tuberosa}) which bear edible tubers. [1913 Webster]