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oca

o·ca [ ṓkə ] (plural o·cas)


noun 
Definition:
 
1. edible tuber: an edible tuber with firm white flesh

2. plant with edible tubers: a bushy plant whose edible tubers are oca. Native to: the Andes Mountains of South America.  Latin name Oxalis tuberosa.

[Early 17th century. Via Spanish< Quechua ócca]
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