What is Flush?

Flush definition and meaning on Dictionary terms:
a blush; rosy glow: a flush of embarrassment on his face.
a rushing or overspreading flow, as of water.

a sudden rise of emotion or excitement: a flush of anger.
glowing freshness or vigor: the flush of youth.
hot flush. hot flash.
a cleansing preparation that acts by flushing: an oil flush for the car’s engine.

verb (used with object)
to redden; cause to blush or glow: Winter air flushed the children’s cheeks.
to flood or spray thoroughly with water, as for cleansing purposes: They flushed the wall with water and then scrubbed it down.

to wash out (a sewer, toilet, etc.) by a sudden rush of water.
Metallurgy. to remove slag from (a blast furnace). to spray (a coke oven) to cool the gases generated and wash away the ammonia and tars distilled.

to animate or excite; inflame: flushed with success.

verb (used without object)
to blush; redden.
to flow with a rush; flow and spread suddenly.

to operate by flushing; undergo flushing: The toilet won’t flush.


reference: https://www.dictionary.com/browse/flush