The term PARTNER OF BARNES can be solved by the crossword solution NOBLE, which is a 5 letter word. NOBLE is an adjective that is used to describe someone or something that is of high moral character, honorable, and generous. It is often used to describe people of high social standing, such as royalty. In this context, it could refer to someone who is a partner of Barnes, implying that they are of high moral character and honorable.