The noun exterior has 2 senses (first 2 from tagged texts)
1. (1) outside, exterior -- (the region that is outside of something)
2. (1) outside, exterior -- (the outer side or surface of something)
Overview of adj exterior
The adj exterior has 1 sense (first 1 from tagged texts)
1. (2) exterior -- (situated in or suitable for the outdoors or outside of a building; "an exterior scene"; "exterior grade plywood"; "exterior paints")