1. phrasal verb To roll back a change or the power of something means to gradually reduce it or end it. [V P n] ⇒ Environmentalists regard these moves as the government taking advantage of the national mood to roll back protective measures. [V P n (not pron)] ⇒ Most major political reforms of the past five years would be rolled back. [Also V n P] 3. phrasal verb → roll To roll back prices, taxes, or benefits means to reduce them. [mainly US] [V P n] ⇒ One provision of the law was to roll back taxes to the 1975 level.
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