The Collaborative International Dictionary of English v.0.48:
Privy \Priv"y\, a. [F. priv['e], fr. L. privatus. See
1. Of or pertaining to some person exclusively; assigned to
private uses; not public; private; as, the privy purse. "
Privee knights and squires." --Chaucer.
2. Secret; clandestine. " A privee thief." --Chaucer.
3. Appropriated to retirement; private; not open to the
public. " Privy chambers." --Ezek. xxi. 14.
4. Admitted to knowledge of a secret transaction; secretly
cognizant; privately knowing.
His wife also being privy to it. --Acts v. 2.
Myself am one made privy to the plot. --Shak.
Privy chamber, a private apartment in a royal residence.
Privy council (Eng. Law), the principal council of the
sovereign, composed of the cabinet ministers and other
persons chosen by the king or queen. --Burrill.
Privy councilor, a member of the privy council.
Privy purse, moneys set apart for the personal use of the
monarch; also, the title of the person having charge of
these moneys. [Eng.] --Macaulay.
Privy seal or Privy signet, the seal which the king uses
in grants, etc., which are to pass the great seal, or
which he uses in matters of subordinate consequence which
do not require the great seal; also, elliptically, the
principal secretary of state, or person intrusted with the
privy seal. [Eng.]
Privy verdict, a verdict given privily to the judge out of
court; -- now disused. --Burrill.