| rampart(noun, support, cover, position, block) |
| wall(noun, cover, position, block, bar) |
| dike(noun, cover, position, guard, shield) |
| safeguard(noun, verb, support, hold, close) |
| barrier(noun, support, block, care, bar) |
| fortification(noun, support, cover, position, block) |
| guard(noun, verb, support, hold, close) |
| citadel(noun, support, fortification, reinforcement, fortress) |
| defense(noun, support, cover, care, guard) |
| protection(noun, support, cover, position, care) |
| screen(noun, verb, support, hold, cover) |
| shield(noun, verb, support, hold, close) |
| barricade(noun, support, cover, position, block) |
| bastion(noun, support, place, cover, position) |
| breakwater |
| mole(noun, defense) |
| palisade(noun, cover, position, block, bar) |
| stronghold(noun, support, cover, position, guard) |
| bar |
| fortress(noun, support, cover, position, guard) |