| Main Entry: | |
| Part of Speech: | noun |
| Definition: | chuckhole |
| Synonyms: | cavity, crater, depression, dip, fracture, gap, hole, pit, pocket, rut, split |
| Main Entry: | cavern |
| Part of Speech: | noun |
| Definition: | hollow in land formation |
| Synonyms: | cave, grotto, hole, pothole, subterrane, subterranean area |
| Main Entry: | pit |
| Part of Speech: | noun |
| Definition: | hole, cavity |
| Synonyms: | abyss, chasm, crater, dent, depression, dimple, excavation, grave, gulf, hell, hollow, indentation, mine, perforation, pockmark, pothole, puncture, shaft, tomb, trench, well |
| Antonyms: | mountain |
| Main Entry: | rut |
| Part of Speech: | noun |
| Definition: | groove, indentation |
| Synonyms: | furrow, gouge, hollow, pothole, rabbet, score, track, trench, trough |
| Antonyms: | closing |