bloodbath

Short definition from Wiktionary

Noun

1. 1
   Indiscriminate killing or slaughter; a massacre.
2. 2
   An aggressive or very violent contest or confrontation.
3. 3
   An upset (as of a game with unexpected results, or a national presidential convention) or heavy defeat.
4. 4
   A large financial loss or massive layoff brought about by negative economic conditions.
5. 5
   A bath taken in warm blood used as a restorative or medical treatment.