Civil Law. Obs. [ad. med.L. fallentia, f. fallĕre to deceive: see -ENCY.] An instance of the failure of a rule; an exception.
1603. Hayward, Answ. to Doleman, iv. L ij. Alexander & Felinus doe assigne fiue fallencies vnto these rules.
1660. Jer. Taylor, Ductor Dubitantium, I. Preface, ix. Socinus sets down eight hundred and two fallencies, (thats the word of the law) concerning the contestation of suits and actions at law.