Definition of "water-heater" [water-heater]

• A gas or gasolene heater for supplying hot water to a bath, lavatory, or kitchen boiler. It consists of a system of pipes or vessels, through which a stream or film of water may pass and be exposed to a large heating surface, and one or more Bunsen gas-burners, the whole being inclosed in a suitable casing and connected with a supply of water and gas. (noun)
• A heating-apparatus which performs its functions by the agency of hot water. (noun)

The Century Dictionary (Public Domain)

• "The water-heater installer warned me that running the fan could extinguish the pilot light and draw dangerous gas into the house."
• "This should reduce any cold-air infiltration from the basement and is more practical than attempting to insulate the entire basement ceiling, which usually contains a maze of ducts or pipes from a central heater, water-heater pipes, electrical wiring, and bridging to help strengthen the joists."
• "And lower the water-heater temperature to 120 degrees if it is set higher."