AFL – Arena Football League; a variation of American football, played indoors on a smaller field with fewer players. “AFL” can also refer to the American Football League, an upstart professional league which competed with the “NFL” in the 1960s

AF2 – The AFL’s minor development league

Assistant Coach – supports the head coach

Artificial Turf – a synthetic grass substitute used to cover a field

AstroTurf – an “Artificial Turf” manufacturer; though a brand name, it is often used as a generic term for all artificial turf

Audible – a change in the play called out as a set of predetermined signals at the line of scrimmage, usually as a result of seeing the opposing team’s formation, also called an “Automatic”

Automatic – See “Audible”