The term TIBIA'S PLACE is composed of two crossword solutions, SHIN and YTKY. The tibia, also known as the shinbone, is a long bone located in the lower leg between the knee and ankle. YTKY is an acronym for the phrase 'Your Turn, Knock Yourself Out, ' which is used to indicate that it is someone else's turn to take action. Therefore, TIBIA'S PLACE can be interpreted as a figurative place where it is someone else's turn to take action.