1. clean free from dirt or impurities
  2. glean gather, as of natural products
  3. calean an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water
  4. colon the part of the large intestine between the cecum and rectum
  5. colleen an Irish girl
  6. colony a group of organisms of the same type living together
  7. Colon a port city at the Caribbean entrance to the Panama Canal
  8. Golan a fortified hilly area between southern Lebanon and southern Syria
  9. cologne a perfumed liquid made of essential oils and alcohol
  10. Cologne a commercial center and river port in western Germany on the Rhine River; flourished during the 15th century as a member of the Hanseatic League
  11. Colony one of the 13 British colonies that formed the original states of the United States
  12. collusion secret agreement
  13. collegian a student (or former student) at a college or university
  14. colophon a publisher's emblem printed in a book
  15. Colossian a native or inhabitant of the city of Colossae in ancient Phrygia
  16. collision an accident resulting from violent impact of a moving object
  17. coltan a valuable black mineral combining niobite and tantalite
  18. column a line of units following one after another
  19. colleague an associate that one works with
  20. colonial relating to a body of people who settle far from home