fifth /ˈfɪθ, ˈfɪf(t)θ, ˈfɪft/
 第五五分之一
 fifth
 第五
 Fifth a.
 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.
 Fifth n.
 1. The quotient of a unit divided by five; one of five equal parts; a fifth part.
 2. Mus. The interval of three tones and a semitone, embracing five diatonic degrees of the scale; the dominant of any key.
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 fifth
      adj : coming next after the fourth and just before the sixth in
            position [syn: 5th]
      n 1: a quantity of liquor equal to one fifth of a United States
           gallon
      2: position five in a countable series of things; "he was fifth
         out of several hundred runners"
      3: a fifth part [syn: one-fifth, fifth part, twenty
         percent]
      4: the musical interval between one note and another five notes
         away from it