| Answer | Crossword Clue |
|---|---|
| conelrad | a system of defense against air attack |
| conelrads | CONELRAD, a system of defense against air attack |
| stockades | A barrier formed from upright wooden posts or stakes, esp. as a defense against attack or as a means of confining animals |
| defensed | DEFENSE, to guard against a specific attack |
| defensing | DEFENSE, to guard against a specific attack |
| turnpikes | A spiked barrier fixed in or across a road or passage as a defense against sudden attack |
