The Collaborative International Dictionary of English v.0.48:

Carvacrol \Car"va*crol\ (k[aum]r"v[.a]*kr[=o]l), n. (Chem.)
   A thick oily liquid, C10H13.OH, of a strong taste and
   disagreeable odor, obtained from oil of caraway (Carum
   carui).
   [1913 Webster]