A concourse is a place where pathways or roads meet, such as in a hotel, a convention center, a railway station, an airport terminal, a hall, or other space.
The term is not limited to places where there are literally pathways or roadways or train tracks joining.
An alternate meaning now is "an open space or hall (as in a railway terminal) where crowds gather.
Examples of concourses include: More recently, "concourse" is often used to refer to a situation where people come together in online presence, even if they do not physically come together in reality.
An example of such an online community is the IEEE Student Concourse, as well as various online shopping concourses.