Definition of "boiler" []

• An enclosed vessel in which water is heated and circulated, either as hot water or as steam, for heating or power. (noun)
• A container, such as a kettle, for boiling liquids. (noun)
• A storage tank for hot water. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "To do away with the confusion resulting from an indefinite meaning of the term boiler horse power, the Committee of Judges in charge of the boiler trials at the Centennial Exposition, 1876, at Philadelphia, ascertained that a good engine of the type prevailing at the time required approximately 30 pounds of steam per hour per horse power developed."
• "This recommendation has been generally accepted by American engineers as a standard, and when the term boiler horse power is used in connection with stationary boilers [58] throughout this country, [59] without special definition, it is understood to have this meaning."
• "The term boiler horse power, therefore, is clearly a measure of evaporation and not of power."