'cha - Acul
- A clean bill of health
- A clean breach
- A clear breach
- A clerical error
- A closed sea
- A collaris
- a concatenation
- a conterbore
- A cut in rates
- A dark horse
- A dead dog
- A deep line of operations
- A digitata
- A direct induced current
- A dog in the manger
- A drawing of tea
- A F of L
- A far cry
- A feather in the cap
- A few