1. power pack a device for converting a power supply to a voltage required by particular equipment
  2. bareback without a saddle
  3. paperback (of books) having a flexible binding
  4. power play an aggressive attempt to compel acquiescence by the concentration or manipulation of power
  5. power brake a brake on an automobile that magnifies a small force applied to the brake pedal into a proportionately larger force applied to slow or stop the vehicle
  6. powerboat a boat propelled by an internal-combustion engine
  7. pipe rack a rack for holding a smoker's pipes
  8. power outage equipment failure resulting when the supply of power fails
  9. paper bag a bag made of paper or plastic for holding customer's purchases
  10. prepacked prepared and wrapped beforehand and ready for sale
  11. piggyback on the back or shoulder or astraddle on the hip
  12. propagate multiply through reproduction
  13. backpack a bag carried by a straps over your shoulders
  14. barrack lodge in buildings used to house military personnel
  15. push back cause to move back by force or influence
  16. back pack a bag carried by a strap on your back or shoulder
  17. pull back pull back or move away or backward
  18. blowback the backward escape of gases and unburned gunpowder after a gun is fired
  19. pig-a-back on the back or shoulder or astraddle on the hip
  20. pickaback on the back or shoulder or astraddle on the hip