A defensive football player positioned behind the defensive line who covers both run and pass plays.
Compound of 'line' + 'backer,' literally meaning 'one who backs up the line.' Developed with American football strategy in the early 20th century as defenses became more sophisticated and specialized positions emerged.
The term linebacker perfectly captures the position's dual nature - close enough to the line to stop running plays, but back enough to cover passing routes. It's a position that requires the versatility to be both a wall and a safety net.
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