1. blue pike variety inhabiting the Great Lakes
  2. blue book a register of persons who are socially prominent
  3. blowback the backward escape of gases and unburned gunpowder after a gun is fired
  4. blue joke an indelicate joke
  5. bulblike shaped like a bulb
  6. playback the act of reproducing recorded sound
  7. playbook a book containing the scripts of one or more dramatic plays
  8. bell book a logbook in which all orders concerning the main engines of a ship are recorded
  9. blue sage sage of western North America to Central America having violet-blue flowers; widespread in cultivation
  10. pullback the act of pulling back
  11. blue sky the sky as viewed during daylight
  12. blowpipe a tube that directs air or gas into a flame to concentrate heat
  13. blue bugle upright rhizomatous perennial with bright blue flowers
  14. bluetick a very fast American hound; white mottled with bluish grey
  15. babelike like a baby especially in dependence
  16. bluebill diving ducks of North America having a bluish-grey bill
  17. blueing a process that makes something blue (or bluish)
  18. bluewing American teal
  19. blue pea vine of tropical Asia having pinnate leaves and bright blue flowers with yellow centers
  20. blue fig Australian tree having hard white timber and glossy green leaves with white flowers followed by one-seeded glossy blue fruit