The term 'CROW's-Nest Call' is a phrase used in the maritime industry. It refers to a call made from the CROW's nest, which is the highest point on a ship, to alert the crew of any potential danger. The two crossword solutions for this term are 'LAND' and 'AHOY'. 'LAND' is a four letter word that means the solid surface of the earth, while 'AHOY' is also a four letter word that is used as a greeting or call to attract attention.