- Field of interest or expertise - One's domain of expertise - or the jurisdiction of a court marshal - Ones domain of expertise or the jurisdiction of a court marshal - Sphere of influence - The precincts within which a bailiff has jurisdiction;
the limits of a bailiff's authority.
- A reason the boy leaves the region - A region - Broad expanse - District - District is airier by the sound of it - Field of interest? Caesarean section - Field of study