Source : Webster's Revised Unabridged Dictionary (1913)

Clavellated \Clav"el*la`ted\, a. [Cf. LL. cineres clavelatti
   ashes of burnt lees or dregs of wine, F. clavel an inferior
   sort of soda, E. clavate.] (Old Chem.)
   Said of potash, probably in reference to its having been
   obtained from billets of wood by burning. [Obs.]