yellow flag

noun

1. Nautical. quarantine flag.
2. water flag.

yellow flag

noun

1. See quarantine flag
   another name for quarantine flag
2. See flag
   See flag 3

Word History and Origins

Origin of yellow flag¹

First recorded in 1775–85

Example Sentences

Occasionally a situation like this might bring about a double yellow flag, or even a single, local yellow flag.

From Popular-Science

And I walked back to my car, and there is was, the yellow flag.

From The Daily Beast

She flew the yellow flag of Spain—and—as the first ball of lead cut across her bowsprit, it fluttered to the deck.

From Project Gutenberg

Right over in that tent with the yellow flag, and Mr. Abernot pointed to a canvas shelter some distance away.

From Project Gutenberg

They went over to the tent with the yellow flag, threading their way in the auto between rows of booths and new buildings.

From Project Gutenberg

It is as if the palace were in quarantine, with the yellow flag floating.

From Project Gutenberg

All these are decorated with the red and yellow flag of Spain,—the banner of blood and gold.

From Project Gutenberg