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Phrase(s): wash away
to be carried away by water or some other liquid. • The bridge washed away in the flood. • All the soil washed away and left the rocks exposed., Phrase(s): wash someone or something away
[for a flood of water] to carry someone or something away. • The flood washed the boats away. • The high water washed away much of the sand along the shoreline., Phrase(s): wash something away
to clean something by scrubbing and flushing away the dirt. • Fresh water will wash the seawater away. • Let’s wash away these muddy footprints.
McGrawhill's American Idioms And Phrasal Verbs