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1. A perennial plant (Oxalis tuberosa) of the high Andes, grown for its edible tubers.
2. The tubers of this plant.
[Spanish, possibly from Quechua oqa.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) any of various South American herbaceous plants of the genus Oxalis, cultivated for their edible tubers: family Oxalidaceae
[C20: via Spanish from Quechua okka]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
or o•ka(ˈoʊ kə)
n., pl. o•cas or o•kas.
1. a wood sorrel, Oxalis tuberosa, of the Andes, cultivated in South America for its edible tubers.
2. a tuber of this plant.
[1595–1605; < Sp < Quechua oqa]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.