The Collaborative International Dictionary
Clavellated
Clavellated \Clav"el*la`ted\ (kl[a^]v"[e^]l*l[=a]"t[e^]d), 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.]
Wiktionary
clavellated
a. (context chemistry obsolete English) Said of potash, probably in reference to its having been obtained from billets of wood by burning.