Definition
DOMESTIC NOTICE
A special notice or notice containing graphics or plain language text pertaining to almost every aspect of aviation, such as military training areas, large scale sporting events, air show information, Special Traffic Management Programs (STMPs), and airport-specific information. These notices are applicable to operations within the United States and can be found on the Domestic Notices website.
Source: FAA Pilot/Controller Glossary (verbatim from the Federal Aviation Regulations).