'squawker' definitions:

Definition of 'squawker'

(from WordNet)
noun
A person given to excessive complaints and crying and whining [syn: whiner, complainer, moaner, sniveller, crybaby, bellyacher, grumbler, squawker]
noun
The loudspeaker on an intercom or public address system [syn: squawk box, squawker, intercom speaker]