Interrogating or questioning somebody, typically in order to test their understanding or knowledge of something, especially an academic subject.
"Quizzing" Examples
Examples of "quizzing" usage:
The TV show is going to be quizzing participants on history and science facts. The professor will be quizzing the students on their understanding of the novel tomorrow. As part of the job interview, the candidate will be quizzing by the HR manager to assess her programming skills. The new student will be quizzed by the teacher to assess her level of proficiency in English. The police investigator will be quizzing the eyewitness to gather more information about the crime.