1. epic a long narrative poem telling of a hero's deeds
  2. epoch a period marked by distinctive character
  3. opaque not transmitting or reflecting light or radiant energy
  4. aback by surprise
  5. book an object consisting of a number of pages bound together
  6. yearbook a reference book that is published regularly once every year
  7. ubiquitous being present everywhere at once
  8. Book the sacred writings of the Christian religions
  9. abaca Philippine banana tree having leafstalks that yield Manila hemp used for rope and paper etc
  10. Ubykh an extinct Caucasian language spoken exclusively in Turkey
  11. ebony hard dark-colored wood used to make furniture
  12. daybook a ledger in which transactions have been recorded as they occurred
  13. white book a government report; bound in white
  14. Epigaea small creeping evergreen shrubs: trailing arbutus
  15. apogee the farthest point in an orbit around the Earth
  16. ABC the elementary stages of any subject (usually plural)
  17. spook a mental representation of some haunting experience
  18. U-boat a German submarine used during World War I and World War II
  19. unhook take off a hook
  20. ebon of a very dark black