The same year, he was called upon for a survey to define the western border of Pennsylvania.

Political boundaries play no part in this, apart from defining the national border.

For most of its length, it now defines the border between these two provinces.

If a cease-fire ever comes, the peace plan requires that experts go over the ground and finally define the border.

Here's a pretty homogenous group that has fairly defined borders if you ask them.

"Line them up and they define the eastern border."

The treaty defined the border in only three articles.

He has erected a berm that for the first time defines the border with Iraq.

Still, defining the border between the public and the private can be extraordinarily difficult for journalists, whose work does not always fall into neat categories.

From there its route has been used to define the interprovincial border with Ontario.