1. (n.) The act of inquiring; examination; a court for investigation.

2. (n.) Judicial inquiry; official examination; inquest.

3. (n.) The finding of a jury, especially such a finding under a writ of inquiry.

4. (n.) A court or tribunal for the examination and punishment of heretics, fully established by Pope Gregory IX. in 1235. Its operations were chiefly confined to Spain, Portugal, and their dependencies, and a part of Italy.

5. (v. t.) To make inquisition concerning; to inquire into.