yam
noun
- the edible, starchy, tuberous root of any of several tropical climbing plants (genus Dioscorea) of the yam family, widely grown in the tropics for food
- any of these plants
- any of various other similar plants, as the barbasco
- ☆ a moist, orange-colored variety of sweet potato
- Scot. potato (sense )
adjective
designating a family (Dioscoreaceae, order Liliales), of climbing, chiefly tropical monocotyledonous plants, including the barbasco
See yam in American Heritage Dictionary 4
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