nose tackle
US /ˈnoʊz ˌtæk.l̩/
UK /ˈnoʊz ˌtæk.l̩/

1.
a defensive lineman in American football who plays directly over the opposing team's center
:
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The nose tackle clogged up the middle, allowing the linebackers to make plays.
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A good nose tackle is crucial for stopping the run game.