naph·thol /ˈnæfˌθɔl, &dɪvɪdɛ;ˈnæp, ˌθol/
  柰酚
  naph·thol /ˈnæfˌθɔl, ˈnæp, ˌθol/ 名詞
  Naph·thol n.  Chem. Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol.  In general they are crystalline substances with a phenol (carbolic) odor.
  Naphthol blue, Naphthol orange, Naphthol yellow Chem., brilliant dyestuffs produced from certain complex nitrogenous derivatives of naphthol or naphthoquinone.
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  naphthol
       n : either of two phenols derived from naphthalene