Ambergris

Ambergris ( /ˈæmbərɡriːs/ or /ˈæmbərɡrɪs/, Latin: Ambra grisea, Ambre gris, ambergrease or grey amber) is a solid, waxy, flammable substance of a dull grey or blackish color produced in the digestive system of and regurgitated or defecated by sperm whales.