1. (noun)inside, interior the region that is inside of something
2. (noun)inside, interior the inner or enclosed surface of something
3. (noun)Department of the Interior, Interior Department, Interior, DoI the United States federaldepartment charged with conservation and the development of natural resources; created in 1849
4. (adj)interior situated within or suitable for inside a building "an interior scene"; "interior decoration"; "an interior bathroom without windows"
5. (adj)home(a), interior(a), internal, national inside the country "the British Home Office has broader responsibilities than the United States Department of the Interior"; "the nation's internal politics"
6. (adj)inner, interior, internal 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.
7. (adj)interior inside and toward a center "interior regions of the earth"
8. (adj)interior, midland, upcountry of or coming from the middle of a region or country "upcountry districts"