noun
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a hollow or hollowed-out place; cavity; a hole.
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a long tube for conveying water, gas, oil, etc.; a pipe.
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an artificial channel or passage for water, having a gate or valve to regulate the flow; a sluice.
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a unit of land measure (?).
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the centre part of a wheel, etc.; the part fastened to the axle or turning on it; the hub.
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the part (as a hole) of a tool which the handle passes through and which holds it.
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the tube of an ear-ornament.