A more thorough explanation:

HORS

hors (or). [French] 1. Out or out of. 2. Outside or outside of.

Hors is a French word that means "out" or "outside". It is often used in English to describe something that is not inside or not part of something else.

• "I'm going hors to get some fresh air."
• "The cat is hors the house."

In the first example, the speaker is saying that they are going outside to get some fresh air. In the second example, the cat is not inside the house, it is outside.