red flag
verb(red-flag)
to identify or draw attention to (a problem or issue to be dealt with)
red flag
noun(red-flag)
a warning signal or sign : something that indicates or draws attention to a problem, danger, or irregularity
red flag
noun(red-flag)
a law allowing courts to prevent people who show signs of being a danger to themselves or to others from having access to firearms (as by ordering the seizure of weapons)