hollow; cavity; dent; depression
hollow; cavity; sunken place; (arch.) vagina; (arch.) female genitalia
to cave in; to become depressed; to sink
hollow; low ground; basin; pit; dip; depression
rice field in a low place
when the right conditions are fulfilled, things will turn out well on their own; (lit.) a sunken place will collect water; someone in bad circumstances will continue to accumulate difficulties