rehab

noun

1. (countable, informal, uncountable)Rehabilitation, especially to treat the use of recreational drugs.

   “go into rehab”

2. (countable, informal, uncountable)An institution for rehabilitation.

   “The assimilationists would have you believe that there is no lesbian or gay underclass, white or of color. That the junkies, crackheads and rummies in the drunk-tanks and welfare rehabs are all straight. Our addicts all have ample checkbooks, the best insurance their professions can buy, and membership in the right upscale cliques.”

3. (countable, uncountable)A brief period of time spent away from the fire by a firefighter at a fire scene, for purposes of recuperation.

verb

1. (informal, transitive)To rehabilitate.