Flagstaff is a city in Arizona, USA. It is known for its proximity to the Grand Canyon and its many national monuments. The crossword solutions for Flagstaff are 'POLE' and 'MAST', both four letters. A POLE is a long, thin, vertical structure made of wood or metal, while a MAST is a tall, vertical structure used to support sails on a boat. Both poles and masts can be found in Flagstaff, as they are used to support flags and other decorations.