The term "available space" refers to any unoccupied or vacant area within a particular location, building or premises. This could be an open area, room or parking lot that is not being used and can be utilized for various purposes such as storage, workspace, events or other activities. The amount of available space may vary depending on the needs and requirements of the individual or organization using it. In essence, "available space" refers to any space that is accessible and ready for use by someone else.