sweet potato

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noun

a plant, Ipomoea batatas, of the morning glory family, grown for its sweet, edible, tuberous roots.
the root itself, used as a vegetable.
Informal. ocarina.

Origin of sweet potato

An Americanism dating back to 1740–50
Can be confusedcassava sweet potato yam
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for sweet potato

sweet potato


noun

a convolvulaceous twining plant, Ipomoea batatas, of tropical America, cultivated in the tropics for its edible fleshy yellow root
the root of this plant
Also called (NZ): kumara
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012