(~s, ~ring, ~red)
1.
A ~ is a shape or area which you cannot see clearly because it has no distinct outline or because it is moving very fast.
Out of the corner of my eye I saw a ~ of movement on the other side of the glass...
Her face is a ~.
N-COUNT: oft N of n
2.
When a thing ~s or when something ~s it, you cannot see it clearly because its edges are no longer distinct.
This creates a spectrum of colours at the edges of objects which ~s the image...
If you move your eyes and your head, the picture will ~.
VERB: V n, V
~red
...~red black and white photographs.
ADJ
3.
If something ~s an idea or a distinction between things, that idea or distinction no longer seems clear.
...her belief that scientists are trying to ~ the distinction between ‘how’ and ‘why’ questions...
= obscure
VERB: V n
~red
The line between fact and fiction is becoming ~red.
ADJ
4.
If your vision ~s, or if something ~s it, you cannot see things clearly.
Her eyes, behind her glasses, began to ~...
Sweat ran from his forehead into his eyes, ~ring his vision.
VERB: V, V n
~red
...visual disturbances like eye-strain and ~red vision.
ADJ