This is quite an ancient character and it's seldomly used in daily life, except in the expression 不落窠臼,
which means extraordinary.
Besides, according to the following dictionary, 窠 can be used to describe generally living places,
e.g. den, nest, hideout, whatever.
which means extraordinary.
Besides, according to the following dictionary, 窠 can be used to describe generally living places,
e.g. den, nest, hideout, whatever.