pyorrhoea
  膿漏
  py·or·rhoea /ˌpaɪəˈrɪə/ 名詞
  pyorrhoea
       n 1: discharge of pus [syn: pyorrhea]
       2: chronic periodontitis; purulent inflammation of the teeth
          sockets [syn: pyorrhea, pyorrhea alveolaris, Riggs'
          disease]