1. paying back a reciprocal group action
  2. punching bag an inflated ball or bag that is suspended and punched for training in boxing
  3. bring back bring back to the point of departure
  4. pinchbeck an alloy of copper and zinc that is used in cheap jewelry to imitate gold
  5. pitching coach an assistant baseball coach in charge of pitchers
  6. prongbuck fleet antelope-like ruminant of western North American plains with small branched horns
  7. running back (football) a back on the offensive team (a fullback or halfback) who tries to advance the ball by carrying it on plays from the line of scrimmage
  8. punching ball an inflated ball or bag that is suspended and punched for training in boxing
  9. push back cause to move back by force or influence
  10. slingback a shoe that has a strap that wraps around the heel
  11. piggyback on the back or shoulder or astraddle on the hip
  12. shrink back pull away from a source of disgust or fear
  13. coming back the occurrence of a change in direction back in the opposite direction
  14. ceding back the act of ceding back
  15. think back recapture the past; indulge in memories
  16. shopping bag a bag made of plastic or strong paper
  17. pushing the act of applying force in order to move something away
  18. hang back to lag or linger behind
  19. wingback (American football) the position of the offensive back who lines up behind or outside the end
  20. springbuck a South African gazelle noted for springing lightly into the air