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dam, dike, dyke, bank, breakwater, seawall, embankment, levee, floodwall | a barrier constructed to contain the flow of water or to keep out the sea | |
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slope, incline, side, bank, embankment, hill, gradient | an elevated geological formation | |
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embankment | a long artificial mound of stone or earth; built to hold back water or to support a road or as protection |