cross-examination

noun2

1. •
   The interrogation or questioning of a witness by the party against whom they have been called and examined, in an attempt to prove or reveal something false or untold during direct examination.

   • It is impossible to bring them here for cross-examination; one simply has to conduct one's defence and argue one's case against an invisible opponent, […] — 1954
2. •
   Any intense period of questioning, especially if hostile.