noun

• The game of Australian rules football
• (computing theory) Initialism of abstract family of languages.
• (automotive) Initialism of adaptive front light.
• (Australian rules football) Initialism of Australian Football League.
• (American football) Initialism of Arena Football League.
• (US, labor union) Initialism of American Federation of Labor.
• (obsolete, American football) Initialism of American Football League.