outer
adjective /ˈaʊtə(r)/
/ˈaʊtər/
[only before noun]- the outer layers of the skin
- While the chassis is made of steel, the outer shell is plastic.
- The attackers began to enter through the outer walls.
- The stair winds up between the inner and outer walls of the house.
- I walked along the outer edge of the track.
- the outer suburbs of the city
- Outer London/Mongolia
- (figurative) to explore the outer (= most extreme) limits of human experience
opposite inner
Word Originlate Middle English: from out + -er, replacing earlier utter in its obsolete sense ‘outer’.