Plain English Meaning
A page on the FAA's special airspace website that shows a map of where restricted and military airspace is located, and whether it's active right now. Pilots use it during flight planning to see what airspace they need to avoid or check on.
Full Definition
A section within the FAA's Special Use Airspace (SUA) website, accessed by clicking the 'Map' tab, that displays a graphical, interactive map of active and scheduled special use airspace areas across the United States. It allows pilots to visually identify the location, boundaries, and current status of restricted areas, military operations areas, and other special use airspace before flight.