interrogation

noun3

1. •
   a long set of questions put to someone, often by the police, to learn what they know

   • There is no interrogation in his eyes / Or in the hands, quiet over the horse's neck, / And the eyes watchful, waiting, perceiving, indifferent. — 1936
2. •
   A question put; an inquiry.
3. •
   (old-fashioned) A question mark.