Generally, a private place refers to a place that is exclusively used by one or more individuals for a private gathering or other personal purpose. It is some place to which the public does not have free access. The term will have different meanings depending on the context in which it is used.
Example of a State Statute ( Kansas) defining Private Place.
K.S.A. § 21-4001[Chapter 21. Crimes And Punishments; Article 40. Crimes Involving Violations of Personal Rights]
(b) A "private place" within the meaning of this section is a place where one may reasonably expect to be safe from uninvited intrusion or surveillance, but does not include a place to which the public has lawful access.