The term 'Jump in a Rink' is a figure skating move that involves a skater jumping from one foot to the other while spinning in the air. The solution for this crossword is 'Axel', which is a type of jump in figure skating. It is named after its inventor, Norwegian figure skater Axel Paulsen, and is considered the most difficult jump in figure skating. It involves a skater taking off from a forward outside edge and rotating one and a half times in the air before landing on the same backward outside edge.