'Killed' in the Bible

Looking around and seeing no one else, he killed the Egyptian and hid him in the sand.

The man replied, "Who appointed you to be an official judge over us? Are you planning to kill me like you killed the Egyptian?" Then Moses became terrified and told himself, "Certainly this event has become known!"

And when Pharaoh stubbornly refused to let us go, the LORD killed every firstborn in the land of Egypt, from the firstborn of humans to the firstborn of animals. Therefore, I sacrifice to the LORD every male that first opens the womb, but I redeem every firstborn of my sons.