slay, slain

Definition:

The term "slay" means to kill a person or animal. Often it means to kill in a forceful or violent way.

When referring to an animal or to a large number of people, the term "slaughter" is another term that is often used.
The word "kill" could also be used to translated this term.
The phrase "the slain" could also be translated as "the slain people" or "the people who were killed."