A fork of Rural Dictionary
Character in Watership Down, an excellent anthropomorphic novel by Richard Adams. A rabbit.
"Fiver lay down in the soft grass and began contemplating the cost of their travels."
Slang for when someone is absent from a conversation or MSN chat.
Greg, stop being a Fiver.
Omg, you're always a Fiver when we text.
Don't Fiver me just because you're mad at me.