a.

1. 个人的，私人的[B]
2. 【古】隐蔽的，秘密的[B]
3. 私下的，不公开的
4. 秘密参与的，知情的[Z][F][（+to）]
   Very few of them were privy to the details of the conspiracy.

   他们之中很少人知道密谋的详情。

n.[C]

1. 【律】有利害关系的人
2. 厕所

adj.

1. (privy to) sharing in the knowledge of (something secret).
2. archaic hidden; secret.

n.

1. a toilet in a small shed outside a house.
2. Law  a person having a part or interest in any action or matter.