(nautical) A flag that uniquely identifies the company that owns or, occasionally, that operates a ship. / (by extension) A flag that identifies a company, unit, or other group.

(nautical) The flag hoisted at the fore by a vessel needing a pilot.

(nautical) The unethical practice of registering a vessel under a series of different flags of convenience so as to circumvent regulations etc.

plural of flag bearer

A plant, the European water-flag or yellow iris.

The country in which a ship is registered.

A highly vocal and visible supporter of a cause.

Highly vocal and visible support given to a cause. / (television) Undesirable horizontal skewing of frames in a video signal.

plural of flag cape

A flag worn over the shoulders (in a manner resembling the capes of superheroes), usually as a patriotic gesture.