\Cou*mar"ic\ (k??-m?r"?k), a.
Relating to, derived from, or like, the {Dipterix odorata}, a
tree of Guiana.
{Coumaric acid} (Chem.), one of a series of aromatic acids,
   related to cinnamic acid, the most important of which is a
   white crystalline substance, {HO.C6H4.C2H2.CO2H}, obtained
   from the tonka bean, sweet clover, etc., and also produced
   artificially.