[n] the federal department charged with conservation and the development of natural resources; created in 1849
[n] the inner or enclosed surface of something
[n] the region that is inside of something
[adj] of or coming from the middle of a region or country; "upcountry districts"
[adj] inside and toward a center; "interior regions of the earth"
[adj] located inward; "Beethoven's manuscript looks like a bloody record of a tremendous inner battle"- Leonard Bernstein; "she thinks she has no soul, no interior life, but the truth is that she has no access to it"- David Denby; "an internal sense of rightousness"- A.R.Gurney,Jr.
[adj] situated within or suitable for inside a building; "an interior scene"; "interior decoration"; "an interior bathroom without windows"