squawker

Noun	1.	squawker - a person given to excessive complaints and crying and whining Synonyms: grumbler, moaner, sniveller, whiner, bellyacher, complainer, crybaby
	2.	squawker - the loudspeaker on an inter-com or public address system Synonyms: intercom speaker, squawk box

beef, bellyache, bellyacher, complainer, crab, crybaby, disagreeable person, gripe, grouse, grumbler, holler, kvetch, moaner, screak, screech, skreak, skreigh, sniveller, squawk, unpleasant person, whiner