Meaning of slotback

slot•back

Pronunciation: (slot'bak"), [key]
— n. Football.
  1. an offensive back who lines up about one yard behind the gap in the line between a tackle and an end stationed a distance outside of the tackle.
  2. the position played by this back.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.