Inquisitor
Inquisitor , noun
[Latin: compare French inquisiteur. See Inquire.]
1.
An inquisitive person; one fond of asking questions. [Rare]
Inquisitors are tatlers.
2.
(Law) One whose official duty it is to examine and inquire, as coroners, sheriffs, etc. — Mozley & W
3.
(R.C.Ch.) A member of the Court of Inquisition.