or, maybe

或 is composed of 囗(an enclosure) and 戈(a spear), it depicts someone's domain is being guarded by force. In the past, 或 meant a land with certain boundaries, but such meaning was then replaced by 域 and 國, now 或 solely means 'or' or 'probably', since enemies may come from different direction, there is no certain post for guards, sometimes they need to guard here, sometimes there.