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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 O·ca n.  Bot. A Peruvian name for certain species of Oxalis (Oxalis crenata, and Oxalis tuberosa) which bear edible tubers.
 

From: WordNet (r) 2.0

 Oxalis tuberosa
      n : South American wood sorrel cultivated for its edible tubers
          [syn: oca, oka, Oxalis crenata]