coun·ter·ir·ri·tant /ˌkaʊntɚ/
  對抗刺激劑,發泡藥
  coun·ter·ir·ri·tant /-ˈɪrətənt/ 名詞
  對抗刺激劑,抗刺激的
  Coun·ter·ir·ri·tant n., Coun·ter·ir·ri·ta·tion, n. See Counter irritant, etc., under Counter, a.
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  counterirritant
       n : a medicine applied locally to produce superficial
           inflammation in order to reduce deeper inflammation