The Collaborative International Dictionary of English v.0.48:

Cahier \Ca`hier"\ (k[.a]`y[asl]" or k[.a]`h[=e]r), n. [F., fr.
   OF. cayer, fr. LL. quaternum. See Quire of paper. The
   sheets of manuscript were folded into parts.]
   1. A number of sheets of paper put loosely together; esp. one
      of the successive portions of a work printed in numbers.
      [1913 Webster]

   2. A memorial of a body; a report of legislative proceedings,
      etc.
      [1913 Webster]