sweet potato

noun

1. a plant, Ipomoea batatas, of the morning glory family, grown for its sweet, edible, tuberous roots.

2. the root itself, used as a vegetable.

3. Informal.,  ocarina.

sweet potato

noun

1. a convolvulaceous twining plant, Ipomoea batatas, of tropical America, cultivated in the tropics for its edible fleshy yellow root

2. the root of this plant

Word History and Origins

Origin of sweet potato¹

An Americanism dating back to 1740–50