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Pronunciation varies by accent · noun
A man-made vertical barrier designed to temporarily contain the waters of a river or other waterway during a flood.
The New Orleans levees and floodwalls were built to withstand a hypothetical storm […].
Use flood wall when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Flood wall means A man-made vertical barrier designed to temporarily contain the waters of a river or other waterway during a flood.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
The New Orleans levees and floodwalls were built to withstand a hypothetical storm […].
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