Cake's not worth the candle

If someone says that the cake's not worth the candle, they mean that the result will not be worth the effort put in to achieve it.

Calf lick

A calf lick is the weird parting in your fringe where your hair grows in a different direction, usually to one side.

Call a spade a spade

A person who calls a spade a spade is one speaks frankly and makes little or no attempt to conceal their opinions or to spare the feelings of their audience.

Call it a day

If you call it a day, you stop doing something for a while, normally at least until the following day.

Call on the carpet

If you are called on the carpet, you are summoned for a reprimand by superiors or others in power.

Call the dogs off

If someone calls off their dogs, they stop attacking or criticising someone.

Call the shots

If you call the shots, you are in charge and tell people what to do.

Call the tune

The person who calls the tune makes the important decisions about something.

Calm before the storm

A calm time immediately before period of violent activity or argument is the calm before the storm.

Can of worms

If an action can create serious problems, it is opening a can of worms.

Can't dance and it's too wet to plow

(USA) When you can't dance and it's too wet to plow, you may as well do something because you can't or don't have the opportunity to do anything else.

Can't do it for toffee

If you can't so something for toffee, you are incapable of doing something properly or to any sort of standard.

Can't get a word in edgeways

If you can't get a word in edgeways, you don't have the chance to say anything because the person you are with is is talking all the time.

Can't get to 1st base

If you can't get to first base, you're having difficulties starting something.

Can't hack it

Unable to perform an act, duty, job etc. (example: I have to quit my job as a computer technician; I just can't hack it.)

Can't hold a candle

If something can't hold a candle to something else, it is much worse.

Can't see the forest for its trees

If someone can't see the forest for its trees, they are too focused on specific details to see the picture as a whole.

Canary in a coal mine

(UK) A canary in a coal mine is an early warning of danger.

Card up your sleeve

If you have a card up your sleeve, you have a surprise plan or idea that you are keeping back until the time is right.

Carpetbagger

A carpetbagger is an opportunist without any scruples or ethics, or a politican who wants to represent a place they have no connection with.

Carrot and stick

If someone offers a carrot and stick, they offer an incentive to do something combined with the threat of punishment.

Carry the can

If you carry the can, you take the blame for something, even though you didn't do it or are only partly at fault.

Carry the day

If something carries the day, it wins a battle (the sense is that the battle has been long and could have gone either way) or competition for supremacy.

Case by case

If things are done case by case, each situation or issue is handled separately on its own merits and demerits.

Case in point

Meaning an instance of something has just occurred that was previously discussed. For instance, a person may have told another that something always happens. Later that day, they see it happening, and the informer might say, 'case in point'.

Cash cow

A product, business, etc, that generates a continuous flow of money or a high proportion of overall profits is a cash cow.

Cash in your chips

If you cash in your chips, you sell something to get what profit you can because you think its value is going to fall. It can also mean 'to die'.

Cast a long shadow

Something or someone that casts a long shadow has considerable influence on other people or events.

Cast aspersion

If you cast aspersion, you try to blacken someone's name and make people think badly of them.

Cast doubt on

If you make other people not sure about a matter, then you have cast doubt on it.

Cast iron stomach

A person with a cast iron stomach can eat or drink anything without any ill effects.

Cast pearls before swine

If you cast pearls before swine, you offer something of value to someone who doesn't appreciate it- 'swine' are 'pigs'.

Cast sheep's eyes at

If you cast sheep's eyes at at someone, you look lovingly or with longing at them.

Cast your mind back

If somebody tells you to cast your mind back on something, they want you to think about something that happened in the past, but which you might not remember very well, and to try to remember as much as possible.

Cast your net widely

If you cast your net widely, you use a wide range of sources when trying to find something.

Casting vote

The casting vote is a vote given to a chairman or president that is used when there is a deadlock.

Castles in the air

Plans that are impractical and will never work out are castles in the air.

Cat among the pigeons

If something or someone puts, or sets or lets, the cat among the pigeons, they create a disturbance and cause trouble.

Cat and dog life

If people lead a cat and dog life, they are always arguing.

Cat burglar

A cat burglar is a skillful thief who breaks into places without disturbing people or setting off alarms.

Cat fur and kitty britches

(USA) When I used to ask my grandma what was for dinner, she would say 'cat fur and kitty britches'. This was her Ozark way of telling me that I would get what she cooked. (Ozark is a region in the center of the United States)

Cat got your tongue?

If someone asks if the cat has got your tongue, they want to know why you are not speaking when they think you should.

Cat nap

If you have a short sleep during the day, you are cat napping.

Cat's lick

(Scot) A cat's lick is a very quick wash.

Cat's pajamas

(USA) Something that is the cat's pajamas is excellent.

Cat's whiskers

Something excellent is the cat's whiskers.

Catch as catch can

This means that people should try to get something any way they can.