The term 'Hockey Rink Divider' is defined by the crossword solution 'REDLINE', which is a 7-letter word. REDLINE is a term used in hockey to refer to the painted line that divides the rink into two halves. This line is used to indicate when the puck has crossed the center of the rink and is also used to determine offsides. The REDLINE is an important part of the game and helps to keep the game fair and organized.