What does“saw red"mean?

"saw red" means:
to become very angry

2013-04-01 20:28:50 補充：
"saw red" other means:
to flare up
to fly into a rage
to storm
to foam with rage
to be in a transport of rage
a flood of anger

2013-04-01 20:30:31 補充：
"saw red" other means:
to infuriate

To Mathew:-
(1)Red-faced which are embarrassed or angry.
(2)informal exciting and of great interest to triad people to see a red-hot issue of blood.

Saw red means looks very angry and the face is very red.