birchistEtymologyFrom Birch + -ist.adjOf or relating to Birchism, ideas from or associated with the John Birch Society.“In essence, the Birchist worldview allowed adherents to hold typically right-wing policy preferences simultaneous with the belief that the Society's opponents, including many bona fide conservatives, were secretly part of the “communist conspiracy.””nounAn adherent of Birchism, a supporter of the John Birch Society.“The Birchists (like the Marxists who have forgotten Marx) have fallen victim to the devil theory of history.”