When someone is described as being in the eldest position, that means that she was born first. Your mother or father is the eldest, your oldest sibling is the eldest.
If you were born first, you are called the eldest. You may also be called the senior sibling, the oldest child, or simply the eldest. You may hear people describe you as the eldest if you have more siblings than your brothers or sisters.
It can also mean that you are the eldest child. If you have younger siblings, you may be called eldest if you are older than them.
For example, my youngest brother is four years older than me, MATRIMONIAL LAW but he is the eldest of us. If we had another sibling, he would be the eldest.
Your teacher called me the eldest in class. My classmates looked up to me.
If you have the same last name as another member of your family, you may also be called eldest if your birthday is before his or hers. For example, if you have the same last name as your mother, you may be called eldest, because your mother was born first.
If you have siblings with the same last name as you, you may be called eldest if your birthday is before their birthdays.
