Growler

n.	1.	One who growls.
	2.	(Zool.) The large-mouthed black bass.
	3.	A four-wheeled cab.

Noun	1.	growler - a speaker whose voice sounds like a growl
	2.	growler - a small iceberg or ice floe just large enough to be hazardous for shipping

growl, grumble, rumble, speaker, talker, utterer, verbaliser, verbalizer