Sideburns, sideboards, or side whiskers are facial hair grown on the sides of the face, extending from the hairline to run parallel to or beyond the ears.
Why are sideburns called sideboards?
“Sideboards” sounded so odd and then I realized that “sideburns” was no less odd. It turns out that this style was named after an American Union Army General, Ambrose Burnside who sported an impressive set of mutton-chops.
What are sideburns called in England?
These quickly became known as "dundrearies", a name used both in Britain and America. In England, however, they were also referred to as "Piccadilly weepers", because these whiskers were worn by the kind of dandy who could be seen in London's Piccadilly.