Lewis Short
(adjective) : sēvĭrālis, e, sevir
* Of or belonging to a sexvir: ludi,of the equestrian sexvirs,Capitol. M. Aurel. 6: cena, of the Augustan sexvirs.—Hence, subst.: sēvĭrā-les, ium, the Augustan sexvirs: ORDO SEVIRALIVM,Inscr. Orell. 2229; Inscr. Murat. 1104, 7.
Charlton T. Lewis, Charles Short, A Latin Dictionary