| Idiom | Meaning | Example | 
| a caution | 
a bold or shocking person, no shrinking violet
 | 
She is a caution! She told the judge he was all wrong.
 | 
| a cheap drunk | 
a person who gets drunk on one or two drinks
 | 
Jo admits she's a cheap drunk. Her limit is two drinks.
 | 
| a checkup | 
a doctor's examination, a medical examination
 | 
If you aren't feeling well, go to the doctor for a checkup.
 | 
| a chicken in every pot | 
enough food for every family
 | 
No one will be hungry if there's a chicken in every pot.
 | 
| a chin wag | 
a conversation, a visit
 | 
The grandmothers were talking  happily - having a chin wag.
 | 
| a chip off the old block | 
a boy who is like his dad, the apple doesn't...
 | 
Eric is a chip off the old block. He's just like his dad.
 | 
| a chunk of change | 
a large amount of money, a few grand, big bucks
 | 
I bet that condo cost him a chunk o' change - 300 grand  at least.
 | 
| a clean bill of health | 
a good report from the  doctor, a good checkup
 | 
You'll never get a clean bill of health if you eat fat meat!
 | 
| a cliff-hanger | 
a game that is close until the end, a barnburner
 | 
Every election in this town is a real cliff-hanger - a close race.
 | 
| a close call | 
close to danger or an accident
 | 
That was a close call. The train nearly hit the bus!
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