blue*/*/*/

[bluː] adj I

1) something that is blue is the same colour as the sky on a clear sunny day

He looked at her with his pale blue eyes.[/ex]

2) informal

feeling rather sad

She usually calls her mother when she's feeling blue.[/ex]

3) old-fashioned

dealing with sex in a way that some people find offensive

a blue movie[/ex]

•

once in a blue moon — used for emphasizing that something does not happen very often[/ex]

We only go out once in a blue moon.[/ex]

once in a blue moon — informal not very often at all[/ex]

till you are blue in the face — informal doing something continually and for a long time, but without success[/ex]

You can say 'don't do it' till you're blue in the face, but if kids want to do it, they will.[/ex]

II

noun [C/U]

blue */[bluː]

the colour of the sky on a clear sunny day

The boy was dressed all in blue.[/ex]

bright blues and yellows[/ex]

•

out of the blue — happening in a way that is sudden and unexpected[/ex]

Out of the blue she said, 'Your name's John, isn't it?'→ blues[/ex]