1. callous emotionally hardened
  2. call-out a challenge to a fight or duel
  3. call out utter aloud; often with surprise, horror, or joy
  4. cleats shoes with leather or metal projections on the soles
  5. callus a skin area that is thick or hard from continual pressure
  6. cautious showing careful forethought
  7. klutz someone who is clumsy
  8. gluteus any one of three large skeletal muscles that form the buttock and move the thigh
  9. cull out select desirable parts from a group or list
  10. gallous alternative terms for gallows
  11. Mallotus capelins
  12. calamitous having extremely unfortunate or dire consequences
  13. clout (boxing) a blow with the fist
  14. gallows an instrument from which a person is executed by hanging
  15. calloused having skin made tough and thick through wear
  16. Callitris evergreen monoecious coniferous trees or shrubs: cypress pines
  17. callosity an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)
  18. Calliophis Asian coral snakes
  19. calamus any tropical Asian palm of the genus Calamus
  20. Callisto the second largest of Jupiter's satellites