the.com/cornerback

means A defensive player in football whose main job is to cover wide receivers and stop passes near the sidelines.

from A straightforward compound coinage from American football: 'corner' marks the position's spot near the flank of the defensive formation, close to the line where the ball can be snapped from either hashmark, and 'back' places him among the defensive backs, the row of players stationed behind the line of scrimmage. The term emerged as the forward pass grew central to the game in the early-to-mid 1900s, and defenses needed a specialist to answer it — no legend here, just the sport naming the job exactly where it stands on the field.