The term 'CALLS FROM YAWLS' can be broken down into three separate crossword solutions: AHOYS (5 letters), MOOS (4 letters), and BAAS (4 letters). AHOYS is a nautical term used to greet someone or to attract attention, usually shouted from a boat. MOOS is the sound made by a cow, and BAAS is the sound made by a sheep. Together, these three words form the phrase 'CALLS FROM YAWLS', which refers to the sounds made by boats, cows, and sheep.