from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A fire-extinguishing system consisting of a network of overhead pipes that release water automatically when a predetermined temperature has been reached.
- noun A system of underground pipes attached to sprinkler heads, used to water lawns.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a system for extinguishing fires; water from a network of overhead pipes is released through nozzles that open automatically with the rise in temperature
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