fullback

plural fullbacks

1. American footballAn offensive back whose primary jobs are to block in advance of the halfback on running plays and for the quarterback on passing plays.
2. ball gamesA position behind the main line of backs in both rugby union and rugby league. In rugby union, they wear number 15 jersey at the start of play and are the last line of defence responsible for catching punts.
3. field hockeyA defensive player who assists the goalie in preventing the opposing team from scoring.
4. ball gamesA player who plays on the left or right side of defence.

   For long, awkward spells, City looked out of their depth. Dani Alves and Jordi Alba attacked like whippets from the full-back positions.

   2015 February 24, Daniel Taylor, “Luis Suárez strikes twice as Barcelona teach Manchester City a lesson”, in The Guardian (London)