intransitive verb.
To tone or intensify (a photographic print, for example) by a second developing process.
intransitive verb.
To restore (buildings or neighborhoods, for example) to a better condition.
intransitive verb.
To develop again.
The Century Dictionary and Cyclopedia
To develop again.
To develop again or a second time; specifically, in photography, to intensify by a second developing process.
the GNU version of the Collaborative International Dictionary of English
verb.
To develop again
verb.
to rebuild an urban area, usually commercial but sometimes residential; -- typically involving some portion of government involvement and expenditure.