1
purple yam (Dioscorea alata);water yam
See also:
大薯 (だいじょ)
2
purple fleshed sweet potato (any one of several different such)
See also:
紫芋 (むらさきいも)
3
Conus pauperculus (species of cone shell)
See also:
芋貝 (いもがい)
Other forms
紅いも 【べにいも】