To draw blood from one's opponent in a fight.
To demonstrably harm the cause of an opponent.
Covered in blood.
All that remained of his right hand after the accident was a bloody stump.
Characterised by bloodshed.
There have been bloody battles between the two tribes.
Used as an intensifier.
Badly behaved; unpleasant; beastly.
(intensifier) Used to express anger, annoyance, shock, or for emphasis.
(casual) bloody mary