castoreum
/kæsˈtɔriəm/
noun
- A substance with a strong smell that comes from beavers, used in perfumes and flavorings.
- The strong, musky scent of castoreum comes from glands near a beaver's tail.
- Castoreum was once a common ingredient in expensive perfumes.
- Some natural food companies still use castoreum as a vanilla-like flavoring.