Greenwood, "Mean" Joe Greene, Dwight White and Ernie Holmes formed the front line for what became known as the "Steel Curtin" defense during the Pittsburgh Steelers' glory years in the 1970s. The team won four Super Bowl titles in six years.
"L.C. was one of the most beloved Steelers during the most successful period in team history and he will be missed by the entire organization," team Chairman Dan Rooney and President Art Rooney II say in a statement. "He will be forever remembered for what he meant to the Steelers both on and off the field."
As NFL.com notes, "Greenwood was a six-time Pro Bowl pick and two-time All-Pro during his career from 1969 to 1981, and he was honored on the NFL's All-Decade Team for the 1970s."
The Post-Gazette adds that "nicknamed 'Hollywood Bags' and known for wearing golden shoes, Mr. Greenwood quickly established himself with the Steelers [after being drafted in 1969]. In 1971, he had five fumble recoveries, which tied for the NFL lead. In 1974, he posted a career-high 11 sacks."
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