Meaning of “blue” - Learner’s Dictionary


noun [ C, U ] us uk /bluː/
Extra Examples
The sky was a brilliant blue.The sky deepened to a rich, dark blue.He can't differentiate between blue and green.Blue is meant to be very calming.We decided on blue for the bathroom.

A2 the colour of the sky when there are no clouds

(Definition of “blue noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)