CARNABY STREET APPROVAL is a term used to describe the approval of fashion trends by the people of Carnaby Street in London, England. The term is often used to refer to the influence that the street had on the fashion industry in the 1960s. GEAR is a four-letter word meaning 'equipment or apparatus necessary for a particular purpose'. Therefore, CARNABY STREET APPROVAL can be summarized as the influence of the people of Carnaby Street in London, England on the fashion industry in the 1960s, which was enabled by the necessary equipment and apparatus.