We all know that blue is a colour.  in fact, it is my favourite colour, and I have owned so many blue cars over the years.

Odd then that I never painted any of my rooms blue, or the house, though one year my father painted our house a very nice shade of blue.

Enough with the memories…

We use blue to describe the sea or the sky, for instance, the deep blue sea, but if you look at it even n a good day, the sea generally looks green to me.

Blue could also be used to describe our mood when we are feeling melancholy or sad.

Then there’s the blues, a genre of music, usually in tandem with rhythm, so we have rhythm and blues

And when we’re angry we could scream blue murder, though that one seems to stretch the use of the word blue a little

Because I have red hair I get called bluey a lot, I’ll leave you to work that one out

You could be turning blue if you are very cold

It’s the second-lowest level of difficulty for a ski slope

And it could be used to describe a pornographic movie, i.e. a blue movie.

It is not to be confused with the word blew, where it is the action of expelling air through your mouth more forcefully than usual.

It blew a gale

He blew another man away (figuratively, not literally)

He blew .08 and lost his licence for drink driving