vanillin
noun/vəˈnɪlɪn/
Etymology From vanilla + -in.
1
A chemical compound, 4-hydroxy-3-methoxybenzaldehyde, that is the primary constituent of vanilla.
2
A synthetic compound used as a substitute for the extract of the vanilla bean.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.