1. principal main or most important
  2. principle a basic generalization that is accepted as true
  3. prose poem prose that resembles poetry
  4. preschool an educational institution for children too young for elementary school
  5. precept a rule of personal conduct
  6. presuppose take for granted or as a given
  7. precipice a very steep cliff
  8. breeze block a light concrete building block made with cinder aggregate
  9. barge pole a long pole used to propel or guide a barge
  10. capricious determined by chance or impulse rather than by necessity
  11. priestly associated with the priesthood or priests
  12. grass poly annual with small solitary pink flowers
  13. Priestley English chemist who isolated many gases and discovered oxygen (independently of Scheele) (1733-1804)
  14. Bristol an industrial city and port in southwestern England near the mouth of the River Avon
  15. precisely in a sharply exact manner
  16. prize money any money given as a prize
  17. prosper make steady progress
  18. Persepolis an ancient city that was the capital of the ancient Persian Empire; now in ruins
  19. presbyopia a reduced ability to focus on near objects caused by loss of elasticity of the crystalline lens after age 45
  20. dirty pool conduct that is unfair or unethical or unsportsmanlike