squealing
  嘯聲; 振鳴聲; 號叫
  Squeal v. i. [imp. & p. p. Squealed p. pr. & vb. n. Squealing.]
  1. To cry with a sharp, shrill, prolonged sound, as certain animals do, indicating want, displeasure, or pain.
  2. To turn informer; to betray a secret. [Slang]
  squealing
       adj : having or making a high-pitched sound such as that made by a
             mouse or a rusty hinge [syn: screaky, screechy, squeaking,
              squeaky]