slotback

/S L AA1 T B AE0 K/
noun
  1. 1

    A particular position in American football, often a running back who lines up near the line of scrimmage and can function as a wide receiver.

  2. 2

    A particular position in Canadian football, similar to a hybrid between wide receiver and running back. This position is more common in the Canadian game than its American counterpart.

Source: https://en.wiktionary.org/wiki/slotback