fullback
US /ˈfʊl.bæk/
UK /ˈfʊl.bæk/

1.
arrière latéral, défenseur
a defensive player in various sports, positioned at the back of the field or close to their own goal.
:
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The fullback made a crucial tackle to prevent a score.
Le arrière latéral a effectué un tacle crucial pour empêcher un but.
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In American football, the fullback often blocks for the running back.
Au football américain, le fullback bloque souvent pour le running back.