| Answer | Crossword Clue |
|---|---|
| FOSSES | Moats or ditches. |
| ditching | Make or repair ditches |
| HAHAS | Barriers having trenches or ditches |
| trenched | Turn over the earth of (a field or garden) by digging a succession of adjoining ditches |
| trenching | Turn over the earth of (a field or garden) by digging a succession of adjoining ditches |
| subirrigations | to irrigate beneath the surface of the ground, as with water passing through a system of underground porous pipes or transmitted through the subsoil from ditches, etc. |
