Mutton chops are a type of facial hair style that consists of a full BEARD with sideburns that extend down to the corners of the mouth. The term 'mutton chops' is derived from the resemblance of the facial hair to the shape of a cut of mutton. This style of facial hair was popular in the 19th century, and has seen a resurgence in recent years. The crossword solution for the term 'mutton chops' is 'BEARD'.