The term MOO MAKER can be broken down into two crossword solutions: COW (3 letters) and CATTLE (6 letters). COW is a common name for the species of large domesticated ungulates, Bos taurus, which are kept as livestock for their milk, meat, and hides. CATTLE is a term used to refer to any type of domesticated bovine animals, including cows, bulls, oxen, and calves. Together, these two terms refer to the animals that produce mooing sounds, hence the term MOO MAKER.