The term 'Tries for a Floating Apple' is a reference to the classic children's game of bobbing for apples. In this game, players attempt to grab an apple floating in a tub of water using only their mouths. The solution to the crossword is 'BOBS', which is a verb meaning to dip one's head into a body of water in order to retrieve something. This is the action that players must take in order to win the game.