fifteenth

fifteenth
ordinal number
  1. constituting number fifteen in a sequence; 15th
    第十五
    August the fifteenth.
    8月15号。
    the fifteenth century.
    15世纪。
    on the fifteenth floor.
    在15楼。
    ■(a fifteenth/one fifteenth)each of fifteen equal parts into which something is or may be divided
    十五分之一
    ■an organ stop sounding a register of pipes two octaves (fifteen notes) above the diapason
    十五度;十五度音栓
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