Source : Webster's Revised Unabridged Dictionary (1913)

Spat \Spat\, v. t. [imp. & p. p. {Spatted}; p. pr. & vb. n.
   {Spatting}.]
   To slap, as with the open hand; to clap together; as the
   hands. [Local, U.S.]

         Little Isabel leaped up and down, spatting her hands.
                                                  --Judd.

Source : WordNet®

spat
     n 1: a quarrel about petty points [syn: {bicker}, {bickering}, {tiff},
           {squabble}, {pettifoggery}, {fuss}]
     2: a cloth covering (a legging) that provides covering for the
        instep and ankles [syn: {spats}, {gaiter}]
     3: a young oyster or other bivalve
     [also: {spatting}, {spatted}]

spat
     v 1: come down like raindrops; "Bullets were spatting down on us"
     2: become permanently attached; "mollusks or oysters spat"
     3: strike with a sound like that of falling rain; "Bullets were
        spatting the leaves"
     4: clap one's hands or shout after performances to indicate
        approval [syn: {applaud}, {clap}, {acclaim}] [ant: {boo}]
     5: engage in a brief and petty quarrel
     6: spawn; "oysters spat"
     7: clap one's hands together; "The children were clapping to
        the music" [syn: {clap}]
     [also: {spatting}, {spatted}]

spatting
     See {spat}

spat
     See {spit}
     [also: {spatting}, {spatted}]