Definition of "water heater" [water heater]

• An appliance for heating water above its ambient temperature, generally for domestic use. (noun)

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• "The water heater and pump winter in the garage where a large and efficient furnace keeps everything well above the thirty-two-degree mark."
• "Wrapped in a bathtowel, he padded to the mudroom, where the water heater shared a closet with the washer-dryer combination."
• "The water heater is old and Nikki’s shampoo-condition-and-shave routine pretty well emptied it."