Pronunciation: (pu-tā'tō, -tu), [key]
1. Also called Irish potato, white potato. the edible tuber of a cultivated plant, Solanum tuberosum, of the nightshade family.
2. the plant itself.
3. See sweet potato (defs. 1, 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.