The Collaborative International Dictionary of English v.0.48:

Neroli \Ner"o*li\, n. [F. n['e]roli, said to be from the name of
   an Italian princess.] (Chem.)
   An essential oil obtained by distillation from the flowers of
   the orange. It has a strong odor, and is used in perfumery,
   etc.
   [1913 Webster]

   Neroli camphor (Chem.), a white crystalline waxy substance,
      tasteless and odorless, obtained from neroli oil; --
      called also auradin.
      [1913 Webster]