1. Irish term for wild, uninhibited, free.
2. From an Irish surname which was derived from O Sirideain meaning "decendant of siridean". The name Siridean means "searcher" in Gaelic.
He's finally sheridan.
Angel: thats cause shes a sheridan
james: wtf dude shes hot i want her
emily: shes a bitch and steals boyfriends!