The term 'Man of Muscat' refers to Sultan Qaboos bin Said Al Said, the ruler of Oman since 1970. He is credited with transforming the country from a poor, isolated nation into a modern, prosperous state. He is also known for his efforts to promote peace and stability in the region. The crossword solution for this term is 'OMANI, ' which is an adjective used to describe something or someone from Oman.