ex·pec·ta·tion of privacy: a belief in the existence of freedom from unwanted esp. governmental intrusion in some thing or place compare zone of privacy
◇ In order to successfully challenge a search or seizure as a violation of the Fourth Amendment to the U.S. Constitution, a plaintiff must show that he or she had manifested a subjective expectation of privacy in the area of the search or the object seized and that the expectation is one that society is willing to recognize as reasonable or legitimate.
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.