What does "person" mean?

Additional senses

1. 2., self-conscious being, as distinct from an animal or a thing; a moral agent; a human being; a man, woman, or child. Consider what person stands for; which, I think, is a thinking, intelligent being, that has reason and reflection. Locke.
2. 3.A human being spoken of indefinitely; one; a man; as, any person present.
3. 4.A parson; the parish priest. [Obs.] Chaucer.
4. 5.(Theol.) Among Trinitarians, one of the three subdivisions of the Godhead (the Father, the Son, and the Holy Ghost); an hypostasis. "Three persons and one God." Bk. of Com. Prayer.
5. 6.(Gram.) One of three relations or conditions (that of speaking, that of being spoken to, and that of being spoken of) pertaining to a noun or a pronoun, and thence also to the verb of which it may be the subject. Note: A noun or pronoun, when representing the speaker, is said to be in the first person; when representing what is spoken to, in the second person; when representing what is spoken of, in the third person.
6. 7.(Biol.) A shoot or bud of a plant; a polyp or zooid of the compound Hydrozoa Anthozoa, etc.; also, an individual, in the narrowest sense, among the higher animals. Haeckel. True corms, composed of united personæ . . . usually arise by gemmation, . . . yet in sponges and corals occasionally by fusion of several originally distinct persons. Encyc. Brit. Artificial, or Fictitious, person (Law), a corporation or body politic. blackstone. -- Natural person (Law), a man, woman, or child, in distinction from a corporation. -- In person, by one's self; with bodily presence; not by representative. "The king himself in person is set forth." Shak. -- In the person of, in the place of; acting for. Shak.
7. 8.To represent as a person; to personify; to impersonate. [Obs.] Milton.