1. propeller plane an airplane that is driven by a propeller
  2. proportionality harmonious arrangement or relation of parts or elements within a whole (as in a design)
  3. propaganda information that is spread to promote some cause
  4. probability a measure of how likely it is that some event will occur
  5. propriety correct behavior
  6. properly speaking in actual fact
  7. property line the boundary line between two pieces of property
  8. propertied owning land or securities as a principal source of revenue
  9. appropriate suitable for a particular person, place, or situation
  10. properly in the right manner
  11. paper plate a disposable plate made of cardboard
  12. purple-blue of blue tinged with purple
  13. property something owned
  14. proprioception the ability to sense the position and location and orientation and movement of the body and its parts
  15. proprionamide the amide of propionic acid (C2H5CONH2)
  16. propertyless of those who work for wages especially manual or industrial laborers
  17. arterial blood blood found in arteries
  18. propensity a natural inclination
  19. proprioceptive of or relating to proprioception
  20. barber's pole striped pole outside a barbershop