The term 'RANCH PEN' is a combination of two words, 'RANCH' and 'PEN'. A RANCH PEN is a type of enclosure used to contain livestock on a RANCH. It is typically made of wood or metal fencing and is designed to keep animals safe and secure. The crossword solution for this term is 'CORRAL', which is another word for an enclosure used to contain animals. A CORRAL is usually made of wood or metal fencing and is used to keep animals in a specific area.