The term 'MASTER of India' is a title given to the British colonial rulers of India during the 19th and 20th centuries. The crossword solution for this term is 'SAHIB', which is an honorific title used to refer to a respected person or MASTER. It is derived from the Persian word 'SAHIB', meaning 'MASTER' or 'LORD'. The title was used to refer to the British colonial rulers in India, as well as to other respected figures in Indian society.