What is the meaning of scat?

noun

• Singing jazz; the singer substitutes nonsense syllables for the words of the song and tries to sound like a musical instrument.
  • synonyms: scat singing

verb

• Flee; take to one's heels; cut and run.
  • usage: "If you see this man, run"; "The burglars escaped before the police showed up"
  • synonyms: run, scarper, turn tail, lam, run away, hightail it, bunk, head for the hills, take to the woods, escape, fly the coop, break away