means The act of questioning someone closely and often aggressively, especially by police or officials seeking information or a confession.

from From Latin 'interrogare,' to question or ask — built from 'inter-' (between) and 'rogare' (to ask), the same 'rogare' that gives us 'rogation,' 'arrogant,' and 'prerogative.' The image is of asking across a gap, words passed back and forth between two parties — though by the time it reaches an interrogation room, that polite 'asking between' has hardened into something far more one-sided.