Pot boilers are a type of cooking equipment used to boil large amounts of liquid, such as water or broth. The term is derived from the traditional method of boiling pots over a STOVE or fire. Lobsters (8 letters), STOVES (6 letters) and STOVE (5 letters) are all related to pot boilers, as they are all used to heat liquids. STOVES are the most common type of pot boiler, while lobsters are a type of pot boiler that is designed to be placed directly into a fire.