washback - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

From wash +‎ back.

washback (uncountable)

1. (linguistics) The way that tests affect how learners acquire and use a language.

From wash +‎ back. See back (“a large shallow vat”).

washback (plural washbacks)

1. A large vessel used for fermentation in a distillery.

• back wash, backwash