The term 'Member of the Hindu Trinity' refers to one of three major deities in Hinduism, namely Brahma, Vishnu, and Shiva. The four-letter solution for this term is SIVA, which is an alternate spelling of Shiva. Shiva is one of the most important gods in Hinduism, and is known as the destroyer and transformer. He is often depicted with a third eye on his forehead, and is associated with meditation, yoga, and asceticism.