An accident or situation that causes blood to flow from someone's body can be gory. Think of a scene from a horror movie.
When we use the word "gory" in conversation, it usually means something is extremely violent or bloody. If you watched a documentary about war and saw soldiers with serious injuries, the footage might have been described as gory. Similarly, if someone had to watch a surgical operation on TV, they might say it was too gory for them to handle. Sometimes "gory" can also be used more casually, like when talking about a scary or disturbing video game - people might warn others that it's really gory and not suitable for kids.
Covered with blood, very bloody
