The term 'LIONS' Lairs' refers to the DENS of LIONS, which are their homes and places of refuge. LIONS typically live in groups called prides, and each pride will have a den that they use as a base. The DENS are usually located in dense vegetation or rocky outcrops, providing protection from predators and the elements. The DENS are also used for raising cubs and for sleeping. The term 'DENS' is a four-letter word that can be used to describe the homes of LIONS.