noun
1.
a. : a set of linguistic forms (as verb forms, pronouns, and inflectional affixes) referring to the speaker or writer of the utterance in which they occur
Latin videmus “we see” is in the first person plural
English me is an objective singular pronoun of the first person
in Sanskrit verbs -mi is a much-used ending of the first person singular
b. : a linguistic form belonging to such a set
Latin video “I see” and eo “I go” are first persons
c. : reference of a linguistic form to the speaker or writer of the utterance in which it occurs
the Latin verb ending -o that marks the first person
2. : a style of discourse characterized by the use of verbs and pronouns of the first person in the most essential statements
fictitious narratives are sometimes put into the first person for greater vividness