1. percuss strike or tap firmly
  2. perilous fraught with danger
  3. perigone collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils
  4. perigon an angle of 360 degrees
  5. peruse examine or consider with attention and in detail
  6. perigee the nearest point in an orbit around the Earth
  7. pergola a framework that supports climbing plants
  8. per se with respect to its inherent nature
  9. percussor (medicine) a small hammer with a rubber head used in percussive examinations of the chest and in testing reflexes
  10. perkiness cheerfulness that bubbles to the surface
  11. periclase a white solid mineral that occurs naturally as periclase
  12. percussion the act of exploding a detonator that explodes when struck
  13. Pericles Athenian statesman whose leadership contributed to Athens' political and cultural supremacy in Greece; he ordered the construction of the Parthenon (died in 429 BC)
  14. paracosm a prolonged fantasy world invented by children
  15. perhaps by chance
  16. Bergson French philosopher who proposed elan vital as the cause of evolution and development (1859-1941)
  17. priggish exaggeratedly or self-righteously proper
  18. Bering Sea part of the North Pacific between Alaska and Siberia
  19. perquisite an incidental benefit for certain types of employment
  20. periwig a wig for men that was fashionable in the 17th and 18th centuries