perimeter (n.)
- ambience
- ambit
- border
- borderline
- boundaries
- boundary
- bounds
- bourn
- brim
- brink
- circle
- circuit
- circumference
- circumscription
- circumstances
- compass
- confines
- context
- edge
- entourage
- environment
- environs
- fringe
- gestalt
- habitat
- hem
- limitations
- limits
- marches
- margin
- milieu
- neighborhood
- outskirts
- pale
- periphery
- situation
- skirt
- skirts
- surroundings
- verge
- vicinity