The Collaborative International Dictionary of English v.0.48:

Scat \Scat\ (sk[a^]t), interj.
   Go away; begone; away; -- chiefly used in driving off a cat.
   [1913 Webster] Scat

The Collaborative International Dictionary of English v.0.48:

Scat \Scat\, Scatt \Scatt\, n. [Icel. skattr.]
   Tribute. [R.] "Seizing scatt and treasure." --Longfellow.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scat \Scat\, n.
   A shower of rain. [Prov. Eng.] --Wright.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scat
    n 1: singing jazz; the singer substitutes nonsense syllables for
         the words of the song and tries to sound like a musical
         instrument [syn: scat, scat singing]
    v 1: flee; take to one's heels; cut and run; "If you see this
         man, run!"; "The burglars escaped before the police showed
         up" [syn: scat, run, scarper, turn tail, lam,
         run away, hightail it, bunk, head for the hills,
         take to the woods, escape, fly the coop, break
         away]

Moby Thesaurus II by Grady Ward, 1.0:

53 Moby Thesaurus words for "scat":
   baloney, bel canto, bilge, blah, blah-blah, bop, bosh, bravura,
   bull, bullshit, bunk, bunkum, choral singing, coloratura, crap,
   croon, crooning, flapdoodle, folk singing, gas, guff, gup, hogwash,
   hokum, hooey, hot air, hum, humming, intonation, lyricism,
   malarkey, moonshine, operatic singing, piffle, poppycock, rot,
   scat singing, shit, singing, sol-fa, sol-fa exercise, solfeggio,
   solmization, song, tommyrot, tonic sol-fa, tripe, vocal music,
   vocalization, warbling, wind, yodel, yodeling