Yam
Pronunciation
- UK IPA: /jæm/
- Rhymes: -æm
Origin 1
From Portuguese inhame and Spanish ñame, possibly from the Fula nyami ("to eat"). The term was coined in 1657.
Full definition of yam
Noun
yam
(plural yams)- (botany) Any climbing vine of the genus Dioscorea in the Eastern and Western hemispheres, usually cultivated
- The edible, starchy, tuberous root of that plant, a tropical staple food.
- (US) A sweet potato; a tuber from the species Ipomoea batatas.
- (Scotland) Potato.
Usage notes
Careful use distinguishes yams (genus Dioscorea) from sweet potatoes (Ipomoea batatas), while casual American use conflates these.