| area(noun, place, part, position, point) |
| bunker |
| chamber(noun, opening, sack, space, section) |
| check(noun, stop, halt, weakness, crack) |
| crevasse(noun, break, crack, flaw, void) |
| discontinuity(noun, break, cut, crack, split) |
| ditch(noun, well, hollow, mine, pit) |
| drawback(noun, difficulty, weakness, crack, fault) |
| dugout(mine, pit, quarry) |
| earth(noun, run, retreat, habitat, haunt) |
| foramen(noun, opening, dump, shack, slum) |
| gob |
| golf hole(noun, expression, idiom) |
| hot water(noun, expression, fix, easy, difficulty) |
| inlet(noun, opening) |
| jail |
| man cave |
| mouth(noun, open, opening, breach, gap) |
| nest(noun, opening, abode) |
| pinch(noun, trouble, difficulty, condition, mess) |