| bulwark(noun, support, cover, position, guard) |
| citadel(noun, fortification, stronghold, support, place) |
| fort(noun, support, cover, position, top) |
| fortress(noun, support, cover, position, top) |
| bastion(noun, support, cover, position, top) |
| fastness(noun, cover, position, top, guard) |
| fortification(noun, support, cover, position, top) |
| sconce |
| stronghold(noun, support, cover, position, top) |
| barbican(noun, defense, fortification, cell, stronghold) |
| barrier(noun, support, fortification, stronghold, embankment) |
| breastwork(noun, defense, fortification, cell, stronghold) |
| outwork(noun, support, defense, fortification, embankment) |
| rampart(noun, support, cover, position, guard) |
| banquette |
| curtain |
| fortalice |
| barricade(noun, cover, position, guard, shield) |
| blockhouse(noun, top, station, fortification, cell) |
| castle(noun, top, station, refuge, fortification) |