NFL, theNFL, the /ˌen ef ˈel/ 
(the National Football League) the organization in charge of the highest level of professional American football in the US. The NFL consists of two leagues (=groups of teams who play against each other), the National Football Conference (NFC) and the American Football Conference (AFC). Every year, the teams that win these leagues play each other in the Super Bowl.
(the National Football League) the organization in charge of the highest level of professional American football in the US. The NFL consists of two leagues (=groups of teams who play against each other), the National Football Conference (NFC) and the American Football Conference (AFC). Every year, the teams that win these leagues play each other in the Super Bowl.