Originally a mistake for sideburns but transformed into a word. A person who has abnormally long eyebrows or abnormally long sideburns. You may refer to these sideburns/eyebrows as sideburns. Example: Did you check out Alex's sidebrows?
SIDEBROWS
Meaning of SIDEBROWS in English
Slang English vocab. Английский сленговый словарь. 2012