Definition of Person:

The mere “I” labelled in dependence on the aggregates.

“I”, self and person are synonymous.

Notes:

1) My preferred personal wording:
The mere “I” labelled relative to the aggregates.

2) It usually says “person”, but person extends primarily to human beings, while the Tibetan term gang zag extends to all forms of life. Therefore instead of person it is better to think here of being or creature perhaps. Also animals and other lifeforms have a self and “I”, or more correctly phrased, are a self and “I”.