The crossword solution for the term 'Spot of Trouble' is JAM, which is a three-letter word. JAM is a type of thick, sweet spread made from fruit and sugar boiled together. It is often used as a topping for toast or other baked goods. JAM can also refer to a situation where something is stuck or blocked, such as traffic JAM. In this context, 'Spot of Trouble' could refer to a difficult situation that is causing a blockage or hindrance.