The term 'Back on Track' can be represented by the crossword solution 'CABOOSE', which is a seven-letter word. CABOOSE is a term used to describe the last car of a train, which is typically used for storage and sometimes as a living space for the crew. The phrase 'Back on Track' implies that something has been set back in order, and the use of the word CABOOSE in this context suggests that the train is now running smoothly and is ready to move forward.