1. den
2. cave
3. excavation
Kanji
1. den
2. cave
3. excavation
1. hollow; cavity
1. sinus; cavity
2. neighborhood (administrative division in North Korea)
1. In a cave; Within a cave
1. Is a cave.; Is a hole.
1. Was a cave; Was hollow
1. Was a cave.
1. Not a cave; It's not a cave
1. If/when the cave; When there's a cave
1. It's not a cave.; It isn't a cave.