1. Culcita dubia resembles Pteridium aquilinum; of Queensland, Australia
  2. Clausewitz Prussian general and military theorist who proposed a doctrine of total war and war as an extension of diplomacy (1780-1831)
  3. chalcid wasp any of various tiny insects whose larvae are parasites on eggs and larvae of other insects; many are beneficial in destroying injurious insects
  4. claustrophobia a morbid fear of being closed in a confined space
  5. cluster bomb bomb consisting of a canister that is dropped from a plane and that opens to release a cluster of bomblets (usually fragmentation bombs) over a wide area
  6. Calystegia sepium common Eurasian and American wild climber with pink flowers
  7. Calvados dry apple brandy made in Normandy
  8. chlamydospore thick-walled asexual resting spore of certain fungi and algae
  9. glossitis inflammation of the tongue
  10. cluster bean drought-tolerant herb grown for forage and for its seed which yield a gum used as a thickening agent or sizing material
  11. closed book something that baffles understanding and cannot be explained
  12. closed session a session that is closed to the public
  13. Colorado spruce tall spruce with blue-green needles and dense conic crown
  14. calcitonin thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone
  15. claustrophobe a person suffering from claustrophobia
  16. claustrophobic abnormally afraid of closed-in places
  17. closed shop a company that hires only union members
  18. class list a list issued by examiners that categorizes students according to the class of honours they achieved in their degree examinations
  19. calcedony a milky or greyish translucent to transparent quartz
  20. closed loop a control system with a feedback loop that is active