YAM

Definition

1. noun edible tuber of any of several yams.
2. noun any of a number of tropical vines of the genus Dioscorea many having edible tuberous roots. — synonyms: yam_plant
3. noun sweet potato with deep orange flesh that remains moist when baked.
4. noun edible tuberous root of various yam plants of the genus Dioscorea grown in the tropics world-wide for food.