Noun
A Eurasian and northwest-African aquatic iris, Iris pseudacorus.
Used other than figuratively or idiomatically: see yellow, flag.
Source: en.wiktionary.orgA simple yellow flag (also called the "Yellow Jack") had historically been used to signal quarantine (it stands for Q among signal flags), but now indicates the opposite, as a signal of a ship free of disease that requests boarding and inspection. Source: Internet
A yellow flag is used to indicate caution requiring slow speed and a red flag requires racers to stop immediately. Source: Internet
Something as simple and yet condemning as a yellow flag last season led to Ford being traded from Kansas City to the 49ers, with the teams meeting Sunday in Super Bowl LIV. Source: Internet
Stroll has been summoned to the stewards due to yellow flag infringements during qualifying. Source: Internet
Dressed in jeans and a black Patagonia vest over a plaid shirt, with prayer beads around her wrist, she greets me at her desk, which is draped in a giant yellow flag emblazoned with resist in black letters. Source: Internet
As a rule, a credit history that’s in complete shambles is a yellow flag, and a clean history is a sign of responsibility, but make sure to take the whole picture into consideration and give the applicants a chance to address issues. Source: Internet