鎮ちん痒よう薬やくちんようやくMeanings1nounantipruritic agent; anti-itch drugrare termpharmacologyRare pharmacological term for a medication that relieves itching. The synonym 鎮痒剤 is more common.See also: 鎮痒剤この鎮ちん痒よう薬やくは虫むし刺さされのかゆみに効きく。This antipruritic drug works on itching from insect bites.