An idiom is a combination of words that has a meaning that is different from the meanings of the individual words themselves. It can have a literal meaning in one situation and a different idiomatic meaning in another situation. It is a phrase which does not always follow the normal rules of meaning and grammar.
Coloridiom:
I'll start my idioms with black & white
Black idiom
as black as coal
My friend's cat is as black as coal.
as black as night
The old house was as black as night when we entered it.
as black as pitch
My face was as black as pitch after cleaning the stove all morning.
black and white
- either good or bad, either one way or the other way but not in between
Our boss sees everything in black and white although he knows this is impossible.
black box
- an electronic device such as a flight recorder that can be removed from an aircraft as a single package
The investigators searched for a long time in order to find the black box of the airplane.
black market
- the place where goods/money are illegally bought and sold
We sold some cigarettes on the black market during our travels.
black out
The man blacked out during the parade and he had to sit down and rest.
black sheep (of a family)
- a person who is a disgrace to a family or group
The man is the black sheep in his family and has not made a success of his life.
blacklist (someone)
- to exclude/ostracize someone, to write someone's name on a list if they break some rules
The sports federation blacklisted the swimmer because he was using steroids.
pitch-black
- very black, as black as pitch
The road was pitch-black and we could not see anything
white Idioms
as white as host
- very pale because of fear/shock/illness
My sister became as white as a ghost when she saw the man at the window.
as white as the driven snow
The fur on the dog was as white as the driven snow.
raise/wave a white flag
- to indicate that you have been defeated and you want to give up
The soldiers raised a white flag and gave themselves up to the enemy.
white elephant
- a useless possession (that often costs money to maintain)
The new airport is a white elephant and nobody wants to use it.
white lie
- a harmless or small lie told to be polite or to avoid hurting someone's feelings
I told my supervisor a white lie yesterday and said that I was sick when actually I was not.
white sale
- the selling of towels or sheets at a reduced price
We went to the white sale at the department store to buy some new sheets.
white-tie event/affair
- an event that requires guests to wear formal dress such as men wearing white bow ties with formal evening dress
I attended a white-tie dinner in honor of the president of our university.
whitewash (something)
- to cover up or gloss over faults/errors/wrongdoing
The government was accused of trying to whitewash the scandal about the illegal money
To Be Continued