The "Steel Curtain" is a reference to the defensive line of the Pittsburgh Steelers in the 1970s. The defensive line consisted of "Mean" Joe Greene, L.C. Greenwood, Ernie Holmes, and Dwight White.
Lenin was not known as "the man of steel." Joseph Stalin was known as that. He adopted the name "Stalin" from the Russian word for steel "stal."
The Iron Curtain
The International Olympic Committee calls football football.
Churchills most famous speech was known as the Iron Curtain.
Detroit. The Detroit Lions football team.
Pittsuburgh, Pennsylvnia is known for their steel-making. That is why their football team is called the Steelers.
The Steelers are known as one of the elite Super Bowl Dynasty teams in NFL history, wining 6 Super Bowl championships (1975,1976, 1978, 1979, 2005 & 2008). The Steelers are also known for their traditionally tough defense, nicknamed 'The Steel Curtain'.
In UK and world "football" (known as soccer in the US), the spelling is defence.In American football (NCAA and NFL), the spelling is defense. (D-fenss) This is a word that has an American English spelling.(see the related link below)
Stainless steel
The US is known for American football. The UK is most known for football (soccer).
Four defensive linemen on the line, rushing the quarterback. Usually there are three linebackers in this type of defense, also known as the 4-3.
Lenin was not known as "the man of steel." Joseph Stalin was known as that. He adopted the name "Stalin" from the Russian word for steel "stal."
Association football is known as soccer to the United States. To many countries, other than the United States, Association football is known as football.
The Iron Curtain
Damascene steel, as well as wootz steel
I don't think it's known but Miami Dolphins were the first to win a superbowl with the defense in 1972. Pittsburgh Steelers have used the defense since 1982 and I know the Houston Oilers also used the defense. Still it would have to be a college team that first used the defense since college football came before professional. And everything including innovation usually trickelles down from there.
Steel drums are made from a specific grade of steel, but not what is known as stainless steel.