輪りん癬せんMeanings1nounringworm; tinearare termmedicineMedical term for a fungal skin infection; the more common Japanese word is 白癬 (はくせん). Rare in general use.See also: 白癬 (はくせん)皮ひ膚ふ科かで輪りん癬せんと診しん断だんされた。I was diagnosed with ringworm at the dermatologist.