The term 'TARZAN'S COMPANION' can be solved by the four letter word 'JANE'. JANE is a fictional character created by Edgar Rice Burroughs in his novel Tarzan of the Apes. She is the love interest and later wife of Tarzan, and plays a major role in the story. JANE is an Englishwoman who is marooned in the jungle with her father, and is eventually rescued by Tarzan. She is brave and independent, and is a strong female character in the novel.