A greenskeeper, also known as a groundskeeper, is a person who maintains the grounds of a golf course, park, or other recreational area. The two crossword solutions for the term 'greenskeeper' are Nader (5 letters) and CAN (3 letters). Nader is a common surname, while CAN is a shortened form of the word 'CARETAKER'. Both words CAN be used to refer to someone who takes care of the grounds of a recreational area.