AFL

Short definition from Wiktionary

Noun

1. 1
   Initialism of abstract family of languages.
2. 2
   Initialism of adaptive front light.
3. 3
   Abbreviation of airfield lighting.
4. 4
   The game of Australian rules football.

Proper noun

1. 1
   Initialism of Australian Football League.
2. 2
   Initialism of Arena Football League.
3. 3
   Initialism of American Federation of Labor.
4. 4
   Initialism of American Football League.