疔ちょうちょうMeanings1nounfuruncle; carbunclemedicineMedical term for a deep skin infection involving a hair follicle or a cluster of follicles; compare 癤 (せつ, boil).See also: 癤疔ちょうは、毛もう包ほうに細さい菌きんが感かん染せんして起おこる皮ひ膚ふの炎えん症しょうです。A furuncle is a skin inflammation caused by bacterial infection of a hair follicle.