The term 'EGG SOURCE' can be broken down into three words: HEN (3 letters), OVARY (5 letters), and LAYER (5 letters). A HEN is a female bird, usually a chicken, that produces eggs. The ovary is an organ in the female reproductive system that produces eggs. A LAYER is a female bird that has been bred to lay eggs. Together, these three words form the term 'EGG SOURCE, ' which refers to the female bird and its organs that are responsible for producing eggs.