A talebearer; an informer; esp. one who betrays secrets or makes known private affairs.

搬弄是非者；告知者(尤指泄漏他人之秘密或私事者)。

A device that gives information or warning.

用以报告或警告之物；显示器；指示器。

Betraying; giving information of what should be kept secret.

泄密的；隐瞒不住的。