noun
private land; private estate
Refers to land owned by an individual or private entity, as opposed to public or government land. The gloss 'park' is a possible but less common translation; in modern Japanese, 私領 typically means private land, not a public park.
この森は私領なので、勝手に入れません。
This forest is private land, so you can't enter without permission.
私領と公有地の境界を確認する。
Check the boundary between private land and public land.