"Augmented reality" is what they call it when a computer/camera application can show you the world in front of you and give you more information about that world.
In this case, the glasses would show you information about what you are seeing superimposed on top of the image of whatever you are looking at.
You look down a city street and you would see not only the buildings and the people, but information about the area, what the names of the buildings are, where there are restrooms, where you can buy a cup of coffee or a pair of pants. Reality. Augmented.