sed·a·tive /ˈsɛdətɪv/
 (a.)使安靜的,使鎮靜的鎮靜劑,能使安靜的東西
 sed·a·tive /ˈsɛdətɪv/ 形容詞
 Sed·a·tive, n. Med. A remedy which allays irritability and irritation, and irritative activity or pain.
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 Sed·a·tive a.  Tending to calm, moderate, or tranquilize; specifically Med., allaying irritability and irritation; assuaging pain.
 sedative
      adj : tending to soothe or tranquilize; "valium has a
            tranquilizing effect"; "took a hot drink with sedative
            properties before going to bed" [syn: ataractic, ataraxic,
             tranquilizing, tranquilising]
      n : a drug that reduces excitability and calms a person [syn: sedative
          drug, depressant, downer]