0 of the colour of the sky without clouds on a bright day, or a darker or lighter type of this: --
1 showing or mentioning sexual activity in a way that offends many people: --
3 (of meat) cooked so that it is still very red --
4 the colour of the sky without clouds on a bright day, or a darker or lighter type of this --
5 a person who has played a sport for Oxford University against Cambridge University or for Cambridge University against Oxford University, or the title given to him or her for this --
I'm very fond of blue.
Police are looking for a small blue car with the registration number K17 EMW.
I caught a tantalizing glimpse of the sparkling blue sea through the trees.