a naval officer above the rank of captain, such as a fleet admiral, admiral, vice-admiral, rear admiral, or commodore, who is entitled to display a flag indicating their rank.
(formerly) an officer in command of a fleet, squadron, or group of ships.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use flag officer in a sentence
Cecil Haney became a flag officer in 2005 when he was promoted to rear admiral and pinned on his first star.These Jobs Were Not Posted on ZipRecruiter (Ep. 473) | Stephen J. Dubner | August 26, 2021 | Freakonomics
On you, every reliance is placed; and I wish I could say as much for every flag-officer afloat.The Two Admirals | J. Fenimore Cooper
"Let the flag-officer go first," added some of the students, dragging Paul to the head of the column.Down the Rhine | Oliver Optic
With the flag-officer, who had seen Christy but once or twice, he was not likely to suspect that Corny was an impostor.
"The flag-officer has signalled for the Vernon to come alongside," interposed another seaman who had heard the question.
In the middle of the afternoon of the next day, Mr. Flint reported to the flag-officer off Pensacola Bay.
British Dictionary definitions for flag officer
an officer in certain navies of the rank of rear admiral or above and entitled to fly its flag
the head of a boat or yacht club
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012