Dream Meaning of a killing

What means dream a killing :

To dream that you kill someone – you are in grave danger

If you kill a person in a dream beware of envy people who are in your environment.

If you kill an animal in a dream, be prepared for problems, because you will be in difficult worries.

If you were killed in a dream, make sure to look out for yourself and personal injury.

Definition I

an act of killing someone or something

Link:  http://www.merriam-webster.com/dictionary/killing

Definition II

Killing is causing the death of a living organism

Link: https://en.wikipedia.org/wiki/Killing