'In private' definitions:

Definition of 'in private'

From: WordNet
adverb
Kept private or confined to those intimately concerned; "it was discussed privately between the two men"; "privately, she thought differently"; "some member of his own party hoped privately for his defeat"; "he was questioned in private" [syn: privately, in private, in camera] [ant: in public, publically, publicly]

Definition of 'In private'

From: GCIDE
  • Private \Pri"vate\ (pr[imac]"v[asl]t), n.
  • 1. A secret message; a personal unofficial communication. [Obs.] --Shak. [1913 Webster]
  • 2. Personal interest; particular business.[Obs.] [1913 Webster]
  • Nor must I be unmindful of my private. --B. Jonson. [1913 Webster]
  • 3. Privacy; retirement. [Archaic] "Go off; I discard you; let me enjoy my private." --Shak. [1913 Webster]
  • 4. One not invested with a public office. [Archaic] [1913 Webster]
  • What have kings, that privates have not too? --Shak. [1913 Webster]
  • 5. (Mil.) A common soldier; a soldier below the grade of a noncommissioned officer. --Macaulay. [1913 Webster]
  • 6. pl. The private parts; the genitals. [1913 Webster]
  • In private, secretly; not openly or publicly. [1913 Webster]