noun
a vertical pipe or tube that is used for conveying water, especially in a fire protection system
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The firefighters connected their hoses to the standpipe to access water on the upper floors of the building.
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Make sure to check the standpipe in case of a fire, it's our main source of water.
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I heard there was a leak in the standpipe, so they had to shut off the water supply.
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The standpipe of knowledge flows endlessly, providing us with a constant stream of information.