What is the meaning of Concourse?

A large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal, or providing access to and linking the platforms in a railway terminus.

An airport terminal.

A large group of people; a crowd.

The running or flowing together of things; the meeting of things; a confluence.

An open space, especially in a park, where several roads or paths meet.

Concurrence; cooperation.

Source: wiktionary.org