The term 'KEEP WATCH OVER' can be summarized by two crossword solutions: PATROL (6 letters) and TEND (4 letters). PATROL means to go around an area in order to guard it or to make sure that everything is in order. It is usually done by law enforcement officers or military personnel. TEND, on the other hand, means to take care of something or someone. It is usually done by a caregiver or a guardian. Therefore, the term 'KEEP WATCH OVER' can be summarized as going around an area to guard it and taking care of something or someone.