The term 'ONE IN DREADLOCKS' can be solved by the crossword solution 'RASTA', which is a five-letter word. Rastafarianism is a religious and social movement that originated in Jamaica in the 1930s. It is based on the belief that Haile Selassie I, the former Emperor of Ethiopia, is the messiah of the African diaspora. The movement is also known for its distinctive style of dress, which includes wearing one's hair in dreadlocks.