| C in C or military C.-in-C. | |
| —abbreviation for | |
| Commander in Chief | |
| C.-in-C. or military C.-in-C. | |
| —abbreviation for | |
| a chattering or flighty, light-headed person. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| C in C commander in chief |