Source : Webster's Revised Unabridged Dictionary (1913)

Mere \Mere\, n. [Written also mar.] [OE. mere, AS. mere mere,
   sea; akin to D. meer lake, OS. meri sea, OHG. meri, mari, G.
   meer, Icel. marr, Goth. marei, Russ. more, W. mor, Ir. &
   Gael. muir, L. mare, and perh. to L. mori to die, and meaning
   originally, that which is dead, a waste. Cf. {Mortal},
   {Marine}, {Marsh}, {Mermaid}, {Moor}.]
   A pool or lake. --Drayton. Tennyson.

Mere \Mere\, n. [Written also meer and mear.] [AS. gem[=ae]re.
   [root]269.]
   A boundary. --Bacon.

Mere \Mere\, v. t.
   To divide, limit, or bound. [Obs.]

         Which meared her rule with Africa.       --Spenser.

Mere \Mere\, n.
   A mare. [Obs.] --Chaucer.

Mere \Mere\, a. [Superl. {Merest}. The comparative is rarely or
   never used.] [L. merus.]
   1. Unmixed; pure; entire; absolute; unqualified.

            Then entered they the mere, main sea. --Chapman.

            The sorrows of this world would be mere and unmixed.
                                                  --Jer. Taylor.

   2. Only this, and nothing else; such, and no more; simple;
      bare; as, a mere boy; a mere form.

            From mere success nothing can be concluded in favor
            of any nation.                        --Atterbury.

Source : WordNet®

mere
     adj 1: being nothing more than specified; "a mere child" [syn: {mere(a)}]
     2: apart from anything else; without additions or
        modifications; "only the bare facts"; "shocked by the mere
        idea"; "the simple passage of time was enough"; "the
        simple truth" [syn: {bare(a)}, {mere(a)}, {simple(a)}]

mere
     n : a small pond of standing water