The crossword solution for the term 'goal (hockey error)' is OWN, which is a three-letter word. In hockey, an OWN goal occurs when a player accidentally scores a goal against their OWN team. This can happen when a player shoots the puck into their OWN net or when a player deflects the puck into their OWN net off of an opposing player's shot. OWN goals are considered errors and are not counted in the official scoring of the game.