neroli oil

UK: /ˈnɪərəlɪ/ US: (ner′ə lē, nēr′-)

WordReference Random House Unabridged Dictionary of American English © 2025

ner′o•li oil′  (ner′ə lē, nēr′-), 

1. Plant Biology a brown essential oil derived from the flowers of the orange tree, Citrus aurantium, used in the manufacture of perfumes.

Also called orange flower oil. 

• Italian neroli, after Anne-Marie de la Tremouille de Noirmontier, Princess of Nerola, who is said to have discovered it ca. 1670
• French néroli
• 1720–30

Collins Concise English Dictionary © HarperCollins Publishers::

neroli oil, neroli / ˈnɪərəlɪ/ noun

1. a brown oil distilled from the flowers of various orange trees, esp the Seville orange: used in perfumery

Etymology: 17th Century: named after Anne Marie de la Tremoïlle of Neroli, French-born Italian princess believed to have discovered it