A1 of the colour of fresh blood:
red lipstick
The dress was bright red.
A2 used to describe hair that is an orange-brown colour
go/turn (bright) redB2 If you go/turn red, your face becomes red because you are angry or embarrassed:
Look, you've embarrassed him - he's gone bright red!
If your eyes are red, the white part of your eyes and the skin around your eyes is red, because of crying, tiredness, too much alcohol, etc.