† conˈclavical,a.Obs.rare. [f. L. conclāve(seeprec.) + -ic + -al1: after clerical, etc.] Of or pertaining to a conclave. 1660S. Fisher Rusticks AlarmWks. (1679) 345 The New Testament..lay lockt up from all the Laity, within the lines of her Conclavical, Clerical Communication.