The field of play in American football.
Only the USA has a pro gridiron league as does Canada. No other country has a pro gridiron league after NFL Europe went bust losing a record $1 billion.
Flag gridiron is played in some primary schools, it involves no contact. Few children play it as it is boring and involves little skill. Gridiron is mainly played by guys who failed at their first choice sport and wanted an easy way to get a scholarship.
Gridiron - novel - was created in 1995.
UTS Gridiron was created in 1993.
Gridiron Fight happened in 1985.
Gridiron Fight was created in 1985.
Gridiron NSW was created in 1983.
Gridiron Australia was created in 1996.
Gridiron Victoria was created in 1997.
Gridiron is American football where as rugby is not
Gridiron Queensland was created in 1985.