outer wall
Building's outer shell
The outer wall is the exterior barrier of a structure—the outermost layer separating inside from outside.
In fortifications, the outer wall is the first line of defense: The siege engines battered the outer wall for days.
The term applies to buildings, cells, organs, or any enclosed space with multiple boundaries.
- battlementToothed fortress wall crown
- parapetLow wall at edge
- castle keepFortified main tower
- brickworkConstruction from fired blocks
- rampartFortified defensive wall
bulwark · pericarp · stone · enceinte · city walls · walled city · thick walls · cell membrane · skin barrier · cortex · carapace · epidermis · cladding · exoskeleton · protective shell · husk · shell · tegument
- Hindu templesmandir, temple, shikhara, temple complex, water temple
- castleskeep, moat, drawbridge, dungeon, turret
- castle partsmoat, keep, drawbridge, battlement, tower
- fortificationsfort, fortress, fortresses, citadel, citadels
- fortressfortress, citadel, fort, stronghold, keep
- outer edgesedge, border, boundary, perimeter, periphery
outer wallinner wall
Surface inside outer boundary
interior wall · partition wall · dividing wall · party wall · room divider
outer wallinner wall
Surface inside outer boundary
keep · citadel · donjon · inner ring