| screen(noun, verb, defend, defense) |
| BAR |
| bolt(verb, close, secure, block, fasten) |
| clog(noun, verb, stop, control, close) |
| cover(noun, verb, position, defend, guard) |
| dam(verb, stop, control, close, secure) |
| fortify(verb, secure, block, protect) |
| hinder(verb, stop, control, close, check) |
| hindrance(noun, trouble, help, end, open) |
| hurdle(noun, help, open, disorder, block) |
| impede(verb, stop, control, close, check) |
| impediment(noun, help, open, disorder, block) |
| parapet(noun, support, cover, position, block) |
| secure(verb, close, block, defend, fasten) |
| breastwork(noun, support, keep, defense, elevation) |
| defense(noun, support, cover, bar, guard) |
| fasten(verb, close, secure, block) |
| guard(noun, verb, cover, position, block) |
| jam(noun, verb, close, secure, block) |
| latch(noun, verb, close, secure, block) |