ˈpressure group noun [countable] a group or organization that tries to influence the opinions of ordinary people and persuade the government to do something ⇒
interest group:
environmental pressure groups [TahlilGaran] Dictionary of Contemporary English ▲
pressure group n. phr. An organization whose goal it is to create changes by lobbying for the benefit of its own members.
Certain unscrupulous pressure groups stop at nothing to achieve their selfish aims. [TahlilGaran] English Idioms Dictionary ▲