bloodshed

Short definition from Wiktionary

Noun

1. 1
   The shedding or spilling of blood.
2. 2
   A slaughter; destruction of life, notably on a large scale.
3. 3
   The shedding of one's own blood; specifically, the death of Christ.
4. 4
   A bloodshot condition or appearance; an effusion of blood in the eye.