one's territory; one's domain
Refers to land or area under one's own control, often used in historical or feudal contexts, but can apply to any personal domain.
The feudal lords strove to expand their own territories.
He pays close attention to the management of his domain.
Compound of 自 (self, one's own) and 領 (territory, domain). The reading じりょう is the on'yomi for both characters.