VANILLIN
vanillin
(noun) a crystalline compound found in vanilla beans and some balsam resins; used in perfumes and flavorings
Source: WordNet® 3.1
Etymology
Noun
vanillin (plural vanillins)
A chemical compound, 4-hydroxy-3-methoxybenzaldehyde, that is the primary constituent of vanilla.
Synthetic compound used as a substitute for the extract of the vanilla bean.
Source: Wiktionary
Va*nil"lin, n. (Chem.)
Definition: A white crystalline aldehyde having a burning taste and
characteristic odor of vanilla. It is extracted from vanilla pods,
and is also obtained by the decomposition of coniferin, and by the
oxidation of eugenol.
Source: Webster’s Unabridged Dictionary 1913 Edition