A(1) : a shelter or refuge (like a nest or den) of a wild animal (2) : a organic covering (like a examination or shell) that encloses and safeguards an animal or simply a colony of zooids b : a building in which a little something is sheltered or saved https://homeimprovementguide35653.ageeksblog.com/36038912/a-simple-key-for-house-unveiled