Princeton's WordNet

1. yam(noun)

   edible tuber of any of several yams

2. yam, yam plant(noun)

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

3. yam(noun)

   sweet potato with deep orange flesh that remains moist when baked

4. yam(noun)

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

Wiktionary

1. yam(Noun)

   home.

Origin: From inhame and ñame, possibly from the nyami. The term was coined in 1657.

Webster Dictionary

1. Yam(noun)

   a large, esculent, farinaceous tuber of various climbing plants of the genus Dioscorea; also, the plants themselves. Mostly natives of warm climates. The plants have netted-veined, petioled leaves, and pods with three broad wings. The commonest species is D. sativa, but several others are cultivated

• broodwortelAfrikaans
• بَطاطا حُلْوَه، قُلْقاس هِنْديArabic
• сладък картофBulgarian
• batata docePortuguese (BR)
• jamCzech
• die YamswurzelGerman
• yamsrodDanish
• γλυκοπατάταGreek
• ñame, batata, camoteSpanish
• jamssEstonian
• سیب زمینیFarsi
• jamssiFinnish
• ignameFrench
• מִין בַּטָטָהHebrew
• रतालु, शकरकंद, अरबी, अरूईHindi
• jamCroatian
• ubi jalarIndonesian
• sætuhnúðjurt; sætuhnúðurIcelandic
• (patata dolce)Italian
• やまいもの類Japanese
• 얌(참마속(屬)의 식물)Korean
• dioskorėjaLithuanian
• jamssLatvian
• keladiMalay
• yamDutch
• søtpotet, yam(srot)Norwegian
• !!(rodzaj słodkiego ziemniaka)Polish
• سیب زمینیPersian
• دكچارو دكورنۍ يو بوټى چې په تودو سيمو كې پيداكيږي او خوړل كيږي، خواږه كچالو (جنوبي امريكاPashto
• batata docePortuguese
• ignam, car­tof dulceRomanian
• ямс; бататRussian
• jam; sladký zemiakSlovak
• jamSerbian
• jamsrotSwedish
• ต้นมันเทศหรือมันเทศThai
• Hint yer elmasıTurkish
• 山藥Chinese (Trad.)
• бататUkrainian
• شمالی امریکا ، شکّر قندUrdu
• củ từVietnamese
• 山药Chinese (Simp.)