1A red flag as a warning of danger or a problem: figurative they had overlooked the red flags that should have alerted them to the county’s disastrous investment strategy figurative you have unusually large amounts of deductions or expenses that act as red flags
More example sentences
- The link between May Day and the use of the red flag as a symbol for socialist workers is close, perhaps above all in France.
- The red flag became the symbol of the blood of working class martyrs in their battle for workers rights.
- The red flag was first raised as a symbol of rebellion by river workers in 18th century London.
Definition of red flag in:
- The British & World English dictionary