Definitions for "Bastions"
Sanctuaries of man's old ways.  Technological cities, usually heavily fortified and condensely populated.  Most are Echaphobic and forbid its use in their walls.  Each Bastion stands its own country, with very little to no contact with the outside world or even other Bastions.
A tower or projection built in the wall of a castle. The bastion sticks out allowing the troops to see along the face of the wall.