Side-whiskers, also known as mutton chops or sideburns, are a type of facial hair that grow on the side of the face, extending from the temple to the lower jawline. Synonyms for this term include burnsides, lamb chops, mutton chops, and soup strainers. Other colloquial names for side-whiskers are cuckoo's wings, chops, muttonstaches, and door knockers. Side-whiskers were popularized in the late 19th century, and have since been worn by various historical figures including Abraham Lincoln and Elvis Presley. Today, side-whiskers are still a common facial hair style, and are sometimes grown in combination with a full beard or goatee.