Fifth (?), a. [OE. fifte, fifthe, AS. fīfta. See Five.] 1. Next in order after the fourth; — the ordinal of five.
2. Consisting of one of five equal divisions of a thing.
Fifth monarchy men(Hist.), a fanatical sect in England, of the time of the commonwealth, who maintained that there would be a fifth universal monarchy, during which Christ would reign on earth a thousand years. — Fifth wheel, a horizontal wheel or segment above the fore axle of a carriage and beneath the body, forming an extended support to prevent careening.