The term 'hockey-puck shape' is used to describe a round, flat object that resembles the shape of a hockey puck. The crossword solution for this term is 'DISC, ' which is a four-letter word. A DISC is a flat, circular object with a uniform thickness throughout its circumference. Discs are commonly used in sports such as hockey, frisbee, and DISC golf. They are also used in everyday items such as CDs, DVDs, and Blu-rays.