1. casus belli an event used to justify starting a war
  2. cascabel a bell attached to a sleigh, or to the harness of a horse that is pulling a sleigh
  3. crucible a vessel used for high temperature chemical reactions
  4. accessible capable of being reached
  5. genus Cebuella pygmy marmosets
  6. crossbill finch with a bill whose tips cross when closed
  7. excusable capable of being overlooked
  8. genus Abelia chiefly east Asian shrubs
  9. Cassius Clay United States prizefighter who won the world heavyweight championship three times (born in 1942)
  10. plausible apparently reasonable, valid, or truthful
  11. excusably in an excusable manner or to an excusable degree
  12. genus Bellis daisy
  13. genus Pellaea genus of chiefly small rock-loving ferns
  14. Cape Sable a cape at the southwest tip of Florida
  15. Queen Isabella the queen of Castile whose marriage to Ferdinand of Aragon in 1469 marked the beginning of the modern state of Spain; they instituted the Spanish Inquisition in 1478 and sponsored the voyages of Christopher Columbus in 1492 (1451-1504)
  16. assessable capable of being considered carefully
  17. casuistical of or relating to or practicing casuistry
  18. casually in an unconcerned manner
  19. cognisable capable of being known
  20. genus Blighia small genus of western African evergreen trees and shrubs bearing fleshy capsular three-seeded fruits edible when neither unripe nor overripe