The term 'DISTANCE FOR CAPTAIN NEMO' is a crossword solution that can be filled in with the word 'LEAGUE'. A LEAGUE is a unit of measurement for distance, typically used to measure the distance between two points at sea. Captain Nemo is a fictional character from Jules Verne's novel '20, 000 Leagues Under the Sea', and is known for his seafaring adventures. Therefore, it makes sense that the crossword solution for 'DISTANCE FOR CAPTAIN NEMO' would be 'LEAGUE'.