What is Person?

Legal Definition
A person is a being, such as a human, that has certain capacities or attributes constituting personhood, which in turn is defined differently by different authors in different disciplines, and by different cultures in different times and places.

In addition to the question of personhood, of what makes a being count as a person to begin with, there are further questions about personal identity and self: both about what makes any particular person that particular person instead of another, and about what makes a person at one time the same person as he or she was or will be at another time despite any intervening changes.

The common plural of "person", "people", is often used to refer to an entire nation or ethnic group (as in "a people"). The plural "persons" is often used in philosophical and legal writing.
-- Wikipedia
Legal Definition
Under the law, a person can sue and be sued, can own property, and can enter into contracts. The term "person" includes both natural person and legal person.
Legal Definition
This word is applied to men, women and children, who are called natural persons. In law, man and person are not exactly-synonymous terms. Any human being is a man, whether he be a member of society or not, whatever may be the rank he holds, or whatever may be his age, sex, &c. A person is a man considered according to the rank he holds in society, with all the rights to which the place he holds entitles him, and the duties which it imposes. 1 Bouv. Inst. n. 137.

2. It is also used to denote a corporation which is an artificial person. 1 Bl. Com. 123; 4 Bing. 669; C. 33 Eng. C. L R. 488; Wooddes. Lect. 116; Bac. Us. 57; 1 Mod. 164.

3. But when the word "Persons" is spoken of in legislative acts, natural persons will be intended, unless something appear in the context to show that it applies to artificial persons. 1 Scam. R. 178.

4. Natural persons are divided into males, or men; and females or women. Men are capable of all kinds of engagements and functions, unless by reasons applying to particular individuals. Women cannot be appointed to any public office, nor perform any civil functions, except those which the law specially declares them capable of exercising. Civ. Code of Louis. art. 25.

5. They are also sometimes divided into free persons and slaves. Freemen are those who have preserved their natural liberty, that is to say, who have the right of doing what is not forbidden by the law. A slave is one who is in the power of a master to whom he belongs. Slaves are sometimes ranked not with persons but things. But sometimes they are considered as persons for example, a negro is in contemplation of law a person, so as to be capable of committing a riot in conjunction with white men. 1 Bay, 358. Vide Man.

6. Persons are also divided into citizens, (q. v.) and aliens, (q. v.) when viewed with regard to their political rights. When they are considered in relation to their civil rights, they are living or civilly dead; vide Civil Death; outlaws; and infamous persons.

7. Persons are divided into legitimates and bastards, when examined as to their rights by birth.

8. When viewed in their domestic relations, they are divided into parents and children; husbands and wives; guardians and wards; and masters and servants son, as it is understood in law, see 1 Toull. n. 168; 1 Bouv. Inst. n. 1890, note.
-- Bouviers Law Dictionary
Legal Definition
A man considered according to the rank he bolds in society, with all the rights to which the place he bolds entitles him, and the duties which it imposes. 1 Bouv. Inst. no. 137. A human being considered as capable of having rights and of being charged with duties; whlle a "thing" is the object over which rights may be exercised.
See also
-- Black's Law Dictionary
Legal Definition
Includes bodies politic and corporate. See 10 Mont. 515, 24 Am. St. Rep. 67, 26 Pac. 1002.
-- Ballentine's Law Dictionary