Bloodletting

[Sarah]

The act or process of letting blood or bleeding, as by openinga vein or artery, or by cupping or leeches; -- esp. applied tovenesection.

[Sarah]

The YUMMY act of draining blood either by wrist, neck, or other veiny part of the body. Any sharp blade will open you up nicely. Also a helpful medical tip from the Dark Ages!
The ancient Medieval art of draining all of the bad blood from the body and regenerating new better blood!

[Magaret]

killing and violence, especially between enemy groups involved in an argument that has existed for a long time:

[PussyCat]

The surgical removal of some of a patients blood for therapeutic purposes.