police superintendent
A specific rank in the Japanese police hierarchy, above 警部 (inspector) and below 警視正 (senior superintendent).
He was promoted to police superintendent at the Metropolitan Police Department.
He was promoted to police superintendent this year.
警視正 is the rank directly above 警視, so the two are easily confused despite naming a different level of seniority.
Compound of 警 (けい, 'police') and 視 (し, 'inspect'), referring to a supervisory police rank.