名詞 yam:

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

yam

n.（名詞）
Any of numerous chiefly tropical vines of the genusDioscorea, many of which have edible tuberous roots.
薯蕷：一種大部分為薯蕷 屬的熱帶藤本植物，許多長(zhǎng)有可食用的塊莖狀根
The starchy root of any of these plants, used in the tropics as food.
山藥，甘薯：這些植物的含淀粉根，在熱帶用作食物
Chiefly Southern U.S. See sweet potato See Regional Note at goober
【多用于美國(guó)南部】 參見 sweet potato 參見 goober

來源：
Portuguese inhame
葡萄牙語 inhame
or obsolete Spanish igname, iôame
或 已廢西班牙語 igname, iôame
both from Portuguese and English Creole nyam [to eat]
都源自 葡萄牙語及英國(guó)克里奧爾語 nyam [吃]
[of West African origin] ; akin to Fulani nyami [to eat] ; akin to Wolof ôam [food, to eat] ; akin to or Mandingo (Bambara) ôambu [manioc]
[源于西非的] ；類似于 弗拉語 nyami [吃] ；類似于 沃洛夫語 ôam [食物，吃] ；類似于 或 曼丁哥語（班巴拉人） ôambu [樹薯]