yam

• 指薯蓣属（Dioscorea）多种热带藤本植物的可食用块茎；有时也指果肉呈深橙色、烤后仍湿润的甘薯（红薯）。

A noun referring to the edible tuber of various tropical vines of the genus Dioscorea, or sometimes a sweet potato with deep orange flesh that remains moist when baked.

1. Edible tuberA2formalculinary

   The starchy, edible root of various tropical vines of the genus Dioscorea, widely grown for food.

   山药

   • Yams are a staple food in many West African countries.
   • She boiled the yam and served it with a spicy sauce.
   • The market was full of fresh yams from the countryside.

2. Tropical vineB1formalscientific

   Any of a number of tropical climbing plants of the genus Dioscorea, which produce edible tubers.

   山药

   • The yam vine can grow several meters in length.
   • Farmers cultivate yam vines in the tropical regions.
   • The leaves of the yam plant are heart-shaped.

3. Sweet potato (US usage)A2informalamericanculinary

   In North America, a term often used for a variety of sweet potato with deep orange, moist flesh.

   红薯

   • For Thanksgiving, she made a casserole with yams and marshmallows.
   • He prefers yams over regular potatoes for their sweetness.
   • The roasted yams were a hit at the dinner party.

   同义词sweet potato

4. Edible rootB1formalculinary

   The edible tuberous root of various yam plants, grown in tropical regions worldwide for food.

   可食用块根

   • Yam roots are rich in carbohydrates and fiber.
   • The villagers harvested the yam roots after the rainy season.
   • Dried yam root can be ground into flour.