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 ides /ˈaɪdz/
 [古羅馬] nones之後第八日

 Ides n. pl.  Anc. Rom. Calendar The fifteenth day of March, May, July, and October, and the thirteenth day of the other months.
    The ides of March remember.   --Shak.
 Note: ☞ Eight days in each month often pass by this name, but only one strictly receives it, the others being called respectively the day before the ides, and so on, backward, to the eighth from the ides.
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 ides
      n : in the Roman calendar: the 15th of March or May or July or
          October or the 13th of any other month