Green’s Dictionary of Slang

1. to rehabilitate, e.g. a broken-down house, an injured limb.

1978		Harper’s Mag. June 43: [They] saw slums and dreamed of humane dwelling spaces (solid 1890s structures built practically with slave labor, now rehabbed to perfection).
1981		G.V. Higgins Rat on Fire (1982) 16: They’re all for loanin’ money to guys like me that’re gonna rehab old joints.
1997		Simon & Burns Corner (1998) 96: He started buying cheap, vacant rowhouse properties [...] rehabbing some as rental units.
2009		L. Tye Satchel 146: Satchel’s years rehabbing his arm and working on the road had him raring to go.

2. to undergo rehabilitation.

1991		N. George ‘Box Office Riot’ in Buppies, B-Boys, Baps and Bohos (1994) 155: Watching himself smoke crack, get rehabbed, and then murdered.
1999		Guardian Guide 31 July–6 Aug. 89: Just before he was rehabbed.
2017		Palladium-Item (Richmond, IN) 26 May B2/2: Langford [...] is still rehabbing from a knee injury that shelved him for nine games.

3. of an individual, to subject to rehabilitation.

2010

C. Hiaasen Star Island (2011) 48: He asked her how many times she’d been rehabbed.