江湖
こ
う
こ
Meanings
1
the public; the world; society
Refers to the wider world or public life, often with a nuance of the secular world outside one's immediate circle. Somewhat literary.
He threw himself into the world at large.
2
rivers and lakes
Original literal meaning. Now mainly encountered in classical contexts or set phrases.
Originally, 江湖 referred to rivers and lakes.
3
archaic
Archaic sense for a retreat away from society, often associated with hermits. Not used in modern Japanese.
In old poetry, 江湖 can mean a hermit's dwelling.