穴居人 Traditional form: 穴居人 Pinyin (reading): xuéjūrén Definitions: cave man Characters: 穴 - cave, den, hole 居 - to live, to reside; to dwell; to sit 人 - man, person; people Traditional characters: 穴 - cave, den, hole 居 - to live, to reside; to dwell; to sit 人 - man, person; people