'Squeal' definitions:

Definition of 'squeal'

From: WordNet
noun
A high-pitched howl
verb
Utter a high-pitched cry, characteristic of pigs [syn: squeal, oink]
verb
Confess to a punishable or reprehensible deed, usually under pressure [syn: confess, squeal, fink]

Definition of 'Squeal'

From: GCIDE
  • Squeal \Squeal\ (skw[=e]l), v. i. [imp. & p. p. Squealed (skw[=e]ld); p. pr. & vb. n. Squealing.] [Of Scand. origin; cf. Sw. sqv[aum]la, 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]

Definition of 'Squeal'

From: GCIDE
  • Squeal \Squeal\, n. A shrill, sharp, somewhat prolonged cry. [1913 Webster]

Synonyms of 'squeal'

From: Moby Thesaurus