1. blue jay common jay of eastern North America
  2. bulgy curving outward
  3. blue jack small salmon of northern Pacific coasts and the Great Lakes
  4. blue jean (usually plural) close-fitting trousers of heavy denim for manual work or casual wear
  5. blue jet atmospheric discharges (lasting 10 msec) bursting from the tops of giant storm clouds in blue cones that widen as they flash upward
  6. biology the science that studies living organisms
  7. pledgee someone to whom a pledge is made or someone with whom something is deposited as a pledge
  8. pledge a binding commitment to do or give or refrain from something
  9. blue joke an indelicate joke
  10. blue sage sage of western North America to Central America having violet-blue flowers; widespread in cultivation
  11. bilge where the sides of the vessel curve in to form the bottom
  12. bilgy smelling like bilge water
  13. bulge swell or protrude outwards
  14. blue law a statute regulating work on Sundays
  15. bluegill important edible sunfish of eastern and central United States
  16. blue wall the secrecy of police officers who lie or look the other way to protect other police officers
  17. pelage growth of hair or wool or fur covering the body of an animal
  18. plage the beach at a seaside resort
  19. blue air the sky as viewed during daylight
  20. blue ash ash of central and southern United States with bluish-green foliage and hard brown wood

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