| Answer | Crossword Clue |
|---|---|
| GEODE | Hollow crystalline rock |
| GEODE | Hollow rock |
| GEODE | Hollow crystallized rock |
| GEODE | Hollow rock with crystals |
| GEODE | Hollow, crystal-filled rock |
| GEODE | Hollow, crystal-containing rock |
| scrapes | Make (a hollow) by scraping away soil or rock |
| scraped | Make (a hollow) by scraping away soil or rock |
| corer | device having a hollow cylindrical drill or tube, used for taking samples of earth, rock, etc., from below the surface of the ground or ocean bottom |
| corers | device having a hollow cylindrical drill or tube, used for taking samples of earth, rock, etc., from below the surface of the ground or ocean bottom |
