a person or thing that growls.

Informal . a pitcher, pail, or other container brought by a customer for beer.

British Slang . a four-wheeled, horse-drawn carriage.

Electricity . an electromagnetic device consisting of two field poles, used for indicating short-circuited coils in armatures and for magnetizing or demagnetizing objects.

an iceberg large enough to be a navigational hazard.

noun

complainer , crab , faultfinder , grumbler , grump , murmurer , mutterer , whiner