coumarin

cou·ma·rin

noun \ˈkü-mə-rən\

Definition of COUMARIN

: a toxic white crystalline lactone C₉H₆O₂ with an odor of new-mown hay found in plants or made synthetically and used especially in perfumery and as a parent compound in anticoagulant agents; also : a derivative of this compound

Origin of COUMARIN

French coumarine, from coumarou tonka bean tree, from Spanish or Portuguese; Spanish cumarú, from Portuguese, from Tupi *kumarú, *kumbarú

First Known Use: 1830