chief operating officerglossary / CHIEF OPERATING OFFICER chief operating officer. A manager who supervises a company’s day-to-day operations and who usu. reports to the chief executive officer. — Abbr. COO. 词条贡献者 法律翻译Howard,在一家顶尖的美国律师事务所担任专职法律翻译,专注翻译各类与信托与财产规划有关的法律文件。