| entrench(verb, business, interfere, invade, intrude) |
| hollow(noun, verb, adjective, line, score) |
| impinge(verb, business, interfere, invade, intrude) |
| infringe(verb, business, interfere, invade, intrude) |
| cavity(noun, score, well, scratch, hole) |
| conduit(noun, course, drain, channel, conduit) |
| dugout(noun, drain, shelter, ditch, channel) |
| dyke(defense, furrow) |
| mine(noun, verb, supply, well, dig) |
| palisade(noun, cover, position, guard, shield) |
| abyss(well, hole, hollow) |
| bulwark(noun, cover, position, guard, shield) |
| defense(noun, cover, guard, resistance, protection) |
| depression(noun, line, drain, well, hole) |
| excavate(verb, dig) |
| flute(noun, line, channel, groove, furrow) |
| foxhole(noun, defense, ditch) |
| gorge(noun, ditch) |
| gouge(noun, verb, line, score, dig) |
| line(noun, move, end, touch, approach) |