What is the esoteric meaning of?

Esoteric most commonly means obscure and only understood or intended to be understood by a small number of people with special (and perhaps secret) knowledge. It's often used to describe knowledge that's only intended to be revealed to people who have been initiated into a certain group.

What is a esoteric person?

The term esoteric has been adopted in the spiritual community in a more philosophical sense, it is used to describe a practice or a person who seemingly has a deep knowledge of the universe and the lessons within it and actively works to connect with those things.