the grammatical person used by the speaker of an utterance in referring to the one (second person singular) or ones (second person plural) to whom he or she is speaking.
a pronoun or verb form in the second person, as the pronoun you in English, or a set of such forms.
Origin of second person
First recorded in 1665–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a grammatical category of pronouns and verbs used when referring to or describing the individual or individuals being addressed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012