筋きん弛し緩かん剤ざいMeaningsNoun1. muscle-relaxant drugKanji used筋muscle弛relax (tension)緩become loose剤chemical substanceComposed of筋きんmuscleNoun弛し緩かんrelaxation (e.g. of muscles); becoming flaccidNoun剤ざいmedicine; agent; (chemical) substance; drug; doseSuffix