The term 'holding one's piece' can be summarized as being in a state of readiness and preparedness. The crossword solution for this term is 'ARMED', which implies that the person is equipped with the necessary tools to protect themselves or their interests. This could refer to a physical weapon, such as a gun, or it could refer to a metaphorical weapon, such as knowledge or resources. In either case, the implication is that the person is prepared to take action if needed.