D defs.my
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Entry 4 senses · 2 variants Webster, 1913

Fifth

/fĭfth/ · IPA /fɪfθ/
01 a. Next in order after the fourth; -- the ordinal of five.
  1. 1.
    Next in order after the fourth; -- the ordinal of five.
  2. 2.
    Consisting of one of five equal divisions of a thing.
Phrases & compounds
Fifth monarchy men — 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.
02 n. The quotient of a unit divided by five; one of five equal parts; a fifth part.
  1. 1.
    The quotient of a unit divided by five; one of five equal parts; a fifth part.
  2. 2.
    The interval of three tones and a semitone, embracing five diatonic degrees of the scale; the dominant of any key.(Mus.)