| Answer | Crossword Clue |
|---|---|
| ABATTIS | Defense made of trees |
| ABATIS | Defense formed of felled trees. |
| ABATIS | Defense formed by felled trees. |
| earthworks | A large artificial bank of soil, esp. one made as a defense |
| earthwork | A large artificial bank of soil, esp. one made as a defense |
| breaches | A gap in a wall, barrier, or defense, esp. one made by an attacking army |
