The term 'BIG TRUNK' can be represented by the crossword solutions AORTA (5 letters), AORTAS (6 letters), and LARGEASS (8 letters). AORTA is a major artery in the human body that carries oxygen-rich blood from the heart to the rest of the body. Aortas is the plural form of AORTA, and LARGEASS is a slang term for something large. Therefore, the term 'BIG TRUNK' can be interpreted as a metaphor for a large artery carrying oxygen-rich blood throughout the body.