Source : Webster's Revised Unabridged Dictionary (1913)

Calender \Cal"en*der\, n. [Per. qalender.]
   One of a sect or order of fantastically dressed or painted
   dervishes.

Calender \Cal"en*der\, n. [F. calandre, LL. calendra, corrupted
   fr. L. cylindrus a cylinder, Gr. ?????????. See {Cylinider}.]
   1. A machine, used for the purpose of giving cloth, paper,
      etc., a smooth, even, and glossy or glazed surface, by
      cold or hot pressure, or for watering them and giving them
      a wavy appearance. It consists of two or more cylinders
      revolving nearly in contact, with the necessary apparatus
      for moving and regulating.

   2. One who pursues the business of calendering.

            My good friend the calender.          --Cawper.

Calender \Cal"en*der\, v. i. [imp. & p. p. {Calendered}; p. pr.
   & vb. n. {Calendering}.] [Cf. F. calandrer. See {Calender},
   n.]
   To press between rollers for the purpose of making smooth and
   glossy, or wavy, as woolen and silk stuffs, linens, paper,
   etc. --Ure.

Source : WordNet®

calender
     n : a machine that smoothes or glazes paper or cloth by pressing
         it between plates or passing it through rollers
     v : press between rollers or plates so as to smooth, glaze, or
         thin into sheets; "calender paper"