Source : Webster's Revised Unabridged Dictionary (1913)

Ream \Ream\, n. [AS. re['a]m, akin to G. rahm.]
   Cream; also, the cream or froth on ale. [Scot.]

Ream \Ream\, v. i.
   To cream; to mantle. [Scot.]

         A huge pewter measuring pot which, in the language of
         the hostess, reamed with excellent claret. --Sir W.
                                                  Scott.

Ream \Ream\, v. t. [Cf. {Reim}.]
   To stretch out; to draw out into thongs, threads, or
   filaments.

Ream \Ream\, n. [OE. reme, OF. rayme, F. rame (cf. Sp. resma),
   fr. Ar. rizma a bundle, especially of paper.]
   A bundle, package, or quantity of paper, usually consisting
   of twenty quires or 480 sheets.

Ream \Ream\, v. t. [imp. & p. p. {Reamed}; p. pr. & vb. n.
   {Reaming}.] [Cf. G. r["a]umen to remove, to clear away, fr.
   raum room. See {Room}.]
   To bevel out, as the mouth of a hole in wood or metal; in
   modern usage, to enlarge or dress out, as a hole, with a
   reamer.

Source : WordNet®

ream
     n 1: a large quantity of written matter; "he wrote reams and
          reams"
     2: a quantity of paper; 480 or 500 sheets; one ream equals 20
        quires
     v 1: squeeze the juice out (of a fruit) with a reamer; "ream
          oranges"
     2: remove by making a hole with a reamer; "ream paper"
     3: enlarge with a reamer; "ream a hole"