(nautical, Royal Navy) The rank of a flag officer. / Any of several equivalent ranks in several other naval or other military organizations.

(military, nautical) A naval officer with the rank of rear admiral or above. Such officers are entitled to fly a personal flag, especially on the flagship.

plural of flag rank

plural of flag captain

(topology) A simplicial complex where every collection of pairwise adjacent vertices spans a simplex.

(figuratively) Registration of a ship in a country chosen for its low taxes, permissive regulations, and so on.

Alternative spelling of flagpole

plural of flag pole, an alternative spelling of flagpoles

(idiomatic) Unconventional or unrestrained behavior; extreme, nonconformist views; the side of one's personality which harbors a tendency toward such behavior or such views.

A flag with a white color, used as a symbol of truce or surrender. / (motorsports) A flag with a white color, signifying the final lap of a race (ie. the bell lap).