To demonstrably harm (the cause of an opponent).
To stain with blood.
To draw blood from (one's opponent) in a fight.
Used to express anger, annoyance, shock, or for emphasis.
Covered in blood.
Characterised by bloodshed.
Used as an intensifier.
bloody mary
Insufficiently cooked, so as to be unpalatable or inedible.
Very lightly cooked.
The broccoli was nicely undercooked.
Done with insufficient energy, enthusiasm, etc.