CONSUETUDO
consuetudo (kon-sw<<schwa>>-t[y]oo-doh), n. [Latin “custom”] 1.Roman law. Custom; long-established usage or practice. 2.Hist. Customary law. • Consuetudo generally bears this sense, referring to law that has been long approved by the will of the people. It is a broad term that includes both the common law and the statutory law of England. 3.Hist. A duty or tax. [Blacks Law 8th]