cave; cavern; den; grotto
dragon's den; auspicious place for a temple, town, etc. to be built (feng shui)
two holes; toilet with separate chambers for urine and faeces
dragon's den; auspicious place for a temple, town, etc. to be built (feng shui)
cave from which cold wind blows
being buried in the same grave
pressure points (e.g. for application of moxa); vulnerable body cavities
gold mine; provider of funds; financial supporter; rich person
storage pit (esp. Jomon to Yayoi periods)
dark hole; idiot; fool; historical road
flat broke; stone broke; penniless
the seven orifices of the head (eyes, nostrils, ear canals, mouth)