The crossword solution for the term 'Certain Jamaican, Religiously' is RASTA, which is an acronym for the religious movement known as Rastafari. This movement originated in Jamaica in the 1930s and is based on the teachings of Marcus Garvey, a Jamaican political leader who believed that the African diaspora should return to Africa. Rastafari followers believe in the divinity of Haile Selassie, the former Emperor of Ethiopia, and practice a lifestyle that emphasizes natural living, vegetarianism, and the use of marijuana as a sacrament.