Andaruni is a term that comes from the Persian language and it refers to the inside or inner part of a place. It's like when you go inside a house, there's the part where you play outside and the part where you go inside to sleep and eat. That inside part is called the andaruni.
For example, in old Persian homes, there was a courtyard where people would sit outside and talk, but there was also a separate area inside the house where the family would spend their time together. This inner area is called the andaruni.
In modern times, andaruni can also refer to the private part of a building or a company, where only authorized people are allowed to enter. It's like a secret place where important things happen but not everyone can see them.
So, in summary, andaruni means the inside or inner part of a place, be it a house or a building, and it can also be a secret or private area that only certain people are allowed to enter.