verb.
To rework old material (physical material, ideas, documents etc), redo some work, with some variations.
noun.
Something reworked, or made up from old materials.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
verb.
present or use over, with no or few changes
verb.
go back over
noun.
old material that is slightly reworked and used again
Word Usage
"Usually a Singapore newspaper's idea of football coverage is tired old rehash from the English media with the odd headline about the local game if there is something nice and negative they can talk about or when it involves the Malaysia Cup days."