Definition of "Interior" :
noun: the United States federal department charged with conservation and the development of natural resources; created in 1849
noun: the inner or enclosed surface of something
noun: the region that is inside of something
adjective: of or coming from the middle of a region or country
adjective: inside and toward a center
"Interior regions of the earth."
adjective: located inward
"She thinks she has no soul, no interior life, but the truth is that she has no access to it."
adjective: situated within or suitable for inside a building
"An interior scene."
adjective: inside the country
"The British Home Office has broader responsibilities than the United States Department of the Interior."