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A heating device consisting of a series of connected pipes, typically inside an upright metal structure, through which steam or hot water is circulated so as to radiate heat into the surrounding space.
(noun)
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A cooling device, as in automotive engines, through which water or other fluids circulate as a coolant.
(noun)
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Physics A body that emits radiation.
(noun)
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A transmitting antenna.
(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.