Hello,<br/><br/>could you tell me, please, what is it a "frown mark". I found it in the following context:<br/><br/>"He was a tall well-made man with a handsome face, dead blue eyes, and a single frown mark, as black as charcoal, right above his nose."<br/><br/>Is it a "wrinkle"? Why is it black then? Is it because the man was perhaps a black man?<br/><br/>Thanks for replies.