1. (

• yam ,

) edible tuber of any of several yams ;

2. (

• yam ,
• yam_plant

) any of a number of tropical vines of the genus Dioscorea many having edible tuberous roots ;

3. (

• yam

) sweet potato with deep orange flesh that remains moist when baked ;

4. (

• yam ,

) edible tuberous root of various yam plants of the genus Dioscorea grown in the tropics world-wide for food ;