筋きん弛し緩かん薬やくきんしかんやくMeanings1nounmuscle relaxantmedicineMedical term for a drug that reduces muscle tension or spasms.手しゅ術じゅつ中ちゅうに筋きん弛し緩かん薬やくが投とう与よされた。A muscle relaxant was administered during the surgery.