The term 'poop out' is a slang phrase that means to become exhausted or to give up. The crossword solutions for this term are TIRE (4 letters), DIE (3 letters), FAIL (4 letters), and FLAG (4 letters). All of these words can be used to describe the feeling of being worn out, giving up, or not succeeding. TIRE implies exhaustion, DIE suggests ceasing to exist, FAIL implies not succeeding, and FLAG implies a sign of surrender. Together, these words provide a vivid picture of the meaning of the phrase 'poop out'.