blue

blue1 [ blu ] adjective ***

1. ) something that is blue is the same color as the sky on a clear sunny day. If something is similar to this color, you can say that it is a bluish color:

He looked at her with his pale blue eyes.

The sky was gloriously blue.

blue with cold: My fingers were turning blue with cold.

2. ) INFORMAL feeling slightly sad:

She usually calls her mother when she's feeling blue.

3. ) INFORMAL OLD-FASHIONED dealing with sex in a way that some people find offensive

=> BLUE MOVIE

once in a blue moon INFORMAL

very rarely:

They come to visit once in a blue moon.

scream blue murder BRITISH INFORMAL

to shout or protest very loudly because you are very angry or feeling a lot of pain

talk a blue streak AMERICAN INFORMAL

to talk a lot without pausing

until/till you are blue in the face INFORMAL

used for saying that there is no use in trying to persuade someone to do something because you will not succeed:

You can tell your kids not to do something until you're blue in the face, but if they want to do it, they will.

╾ blue|ness noun uncount

blue

blue 2 [ blu ] noun count or uncount **

the color of the sky on a clear sunny day:

The boy was dressed all in blue.

The room had been painted in bright blues and yellows.

the boys in blue INFORMAL

the police

out of the blue

happening in a way that is sudden and unexpected, and does not seem connected with anything that happened before:

Out of the blue she said, Your name's John, isn't it?

=> BOLT1