Source : Webster's Revised Unabridged Dictionary (1913)

Clatter \Clat"ter\ (kl[a^]t"t[~e]r), v. i. [imp. & p. p.
   {Clattered} (-t[~e]rd); p. pr. & vb. n. {Clattering}.] [AS.
   clatrung a rattle, akin to D. klateren to rattle. Cf.
   {Clack}.]
   1. To make a rattling sound by striking hard bodies together;
      to make a succession of abrupt, rattling sounds.

            Clattering loud with iron clank.      --Longfellow.

   2. To talk fast and noisily; to rattle with the tongue.

            I see thou dost but clatter.          --Spenser.

Clatter \Clat"ter\, v. t.
   To make a rattling noise with.

         You clatter still your brazen kettle.    --Swift.

Clatter \Clat"ter\, n.
   1. A rattling noise, esp. that made by the collision of hard
      bodies; also, any loud, abrupt sound; a repetition of
      abrupt sounds.

            The goose let fall a golden egg With cackle and with
            clatter.                              --Tennyson.

   2. Commotion; disturbance. ``Those mighty feats which made
      such a clatter in story.''

Source : WordNet®

clatter
     n : a rattling noise (often produced by rapid movement); "the
         shutters clattered against the house"; "the clatter of
         iron wheels on cobblestones"
     v : make a rattling sound; "clattering dishes" [syn: {clack}, {brattle}]