relaxant

名词 relaxant:

1. a drug that relaxes and relieves tension

形容词 relaxant:

1. tending to relax or relieve muscular or nervous tension

re.lax.ant

n.（名词）
Something, such as a drug or therapeutic treatment, that relaxes or relieves muscular or nervous tension.
驰缓药：放松或减轻肌肉或神经紧张的东西如药物或治疗过程
adj.（形容词）
Tending to relax or to relieve tension.
起松弛作用的：倾向于放松或减轻紧张程度的