A person's second, third or fourth attempt to enter rehab after s/he fell off the wagon (usually in a short time span).
Used both as a verb (action) and a noun (the place).
1. Britney Spears went to re-re-rehab following months of scandalous behavior and after two 24-hour stints within the previous ten days.
2. Danny Bonaduce's re-re-rehab was chronicled on his celebreality show, "Breaking Bonaduce."