Definition from Wiktionary, the free dictionary
confidant (plural confidants)
- a person in whom one can confide or share one's secrets: a friend
- You love me for no other end / Than to become my confidant and friend; / As such I keep no secret from your sight. — Dryden.
a person in whom one can confide or share one's secrets: a friend
See also 
- third-person plural present active subjunctive of cōnfīdō