v. i. [ imp. & p. p. Squealed p. pr. & vb. n. Squealing. ] [ Of Scand. origin; cf. Sw. sqväla, Norw. skvella. Cf. Squeak, Squall. ] 1. To cry with a sharp, shrill, prolonged sound, as certain animals do, indicating want, displeasure, or pain. [ 1913 Webster ]
2. To turn informer; to betray a secret. [ Slang ] [ 1913 Webster ]