Meaning of ROLLBACK in English

ROLLBACK

roll ‧ back /ˈrəʊlbæk $ ˈroʊl-/ BrE AmE noun [uncountable and countable] especially American English

an occasion when a tax, price, law etc is reduced to a previous level or changed so that it is the way it used to be ⇨ roll back at ↑ roll 1

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.