source: Reaction GIF - Find & Share on GIPHY

a noncommissioned officer in the armed forces, in particular (in the US Army or Marine Corps) an NCO ranking above corporal and below staff sergeant, or (in the US Air Force) an NCO ranking above airman and below staff sergeant.

〘軍〙 軍曹(｟略｠ Sgt., Serg., Sergt.)〘下士官の1階級〙; (米陸軍･海兵隊の)3等軍曹, (米空軍の)4等軍曹, (英陸･空軍の)軍曹〘corporalの上の階級〙

British a police officer ranking below an inspector.

巡査部長｟英｠ ではinspectorの下でconstableの上の階級

US a police officer ranking below a lieutenant.

巡査部長｟米｠ではcaptain/lieutenantの下;

sergeancy | ˈsärj(ə)nsē | noun (plural sergeancies)

Middle English: from Old French sergent, from Latin servient- ‘serving’, from the verb servire. Early use was as a general term meaning ‘attendant, servant’ and ‘common soldier’; the term was later applied to specific official roles.