台たい湾わん山やま芋いもたいわんやまいもじ字FuriganaMeanings1nounwater yam; winged yam; purple yamrare termRefers to Dioscorea alata, a species of yam. The term is rare; the more common Japanese name is 大薯 (ダイジョ).See also: ダイジョ