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backflow

[ bak-floh ]
/ ˈbækˌfloʊ /
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noun
a flow of a liquid opposite to the usual or desired direction.
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SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
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Question 1 of 6
Which form is used to state an obligation or duty someone has?

Origin of backflow

First recorded in 1880–85; back2 + flow
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use backflow in a sentence

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