1 definition by Nocturnal Otaku
Civil War General Ambrose Everett Burnside was noted for his unusual facial hair, joining strips of hair in front of his ears to his mustache but with chin clean-shaven; the word burnside was coined to describe this style. The syllables were later reversed to give sideburns.
Dude, you started out with sideburns, then you went to mutton chops, and now you've got a full-blown burnside. Are you trying to not get a date?
by Nocturnal Otaku January 4, 2012