DictionarybackwashBackward flow
noun / verb

backwash

BAK-wawsh/ˈbækwɔːʃ/

A flow returning against its original direction.

The wave's backwash drains toward the sea around the rock.

A compact two-stage shoreline sequence shows a wave washing up around a fixed rock, then the same water draining back toward the sea.
Etymology

Back and wash originally described the motion of a receding wave. That returning-flow image also makes sense of the figurative meaning: unpleasant consequences that follow an event.

More examples

  • The operator backwashes the filter to remove trapped dirt.
  • Small firms suffered in the backwash of the financial crisis.
  • The boat rocked in the backwash from the passing ferry.

Forms

backwash · backwashes · backwashed · backwashing

Similar words

return flow
Describes reversed liquid movement without the figurative consequences.
aftermath
Specifically names consequences rather than a physical returning flow.