The term 'anklebone-related' can be summarized by the crossword solution 'tarsal, ' which is a six-letter word. Tarsal bones are a group of seven bones located in the ankle region of the human body. These bones form the tarsus, which is the uppermost region of the foot and is connected to the lower leg bones. The tarsal bones provide stability and support for the foot and ankle, and they also help to absorb shock when walking or running.