scarlet letterscarlet letter
The definition of a scarlet letter is an identifying mark or brand placed on someone who has committed adultery.
An example of a scarlet letter is the Puritan woman in Nathaniel Hawthorne's 1850 book The Scarlet Letter who cheated on her husband and had to wear a red A.
Historical a red letter A worn by a person convicted of adultery
Origin of scarlet letterfrom The Scarlet Letter, novel (1850) by Nathaniel Hawthorne