PTS Pali-English dictionary - The Pali Text Society's Pali-English dictionary
Ullahaka
Ullahaka,(adj.) [?] only in Acc.nt.ullahakaṁ used adverbially,in cpd.dant° after the manner of rubbing the teeth,by means of grinding the teeth M.III,167.Seems to be a a(/pac legomέnon.(Page 155)