Wa·ter gage See Water gauge.
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Wa·ter gauge [Written also water gage.]
1. A wall or bank to hold water back.
2. An instrument for measuring or ascertaining the depth or quantity of water, or for indicating the height of its surface, as in the boiler of a steam engine. See Gauge.
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water gage
n : gauge for indicating the level of water in e.g. a tank or
boiler or reservoir [syn: water gauge, water glass]