pi·per·a·zine /pɪˈpɛrəˌzin, paɪ-/
  惙惙; 胡椒□; 驅蛔靈
  pi·per·a·zine /paɪˈpɛrəˌzɪn/ 名詞
  Pi·per·a·zine n. Also -zin .  Chem. A crystalline substance, (C2H4NH)2, formed by action of ammonia on ethylene bromide, by reduction of pyrazine, etc. It is a strong base, and is used as a remedy for gout.
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  piperazine
       n : vermifuge used to treat infestations by roundworms or
           pinworms