The term 'Big Indian' refers to a variety of titles and roles in Indian culture. Rajah is a title for a prince or king, Rani is a title for a queen, SACHEM is a title for a chief, Maharajah is a title for a great king, Raja is a title for a ruler, and Nehru is a title for a prime minister. All of these titles are associated with the term Big Indian, and each title has its own unique meaning and significance in Indian culture.