rehash

Short definition from Wiktionary

Verb

1. 1
   To hash (chop food into small pieces) again.
2. 2
   To repeat with minor variation.
3. 3
   To analyze a prior contentious or embarrassing event.
4. 4
   To recompute the structure of a hash table, taking into account any newly added items.

Noun

1. 1
   Something reworked, or made up from old materials.
2. 2
   A recomputation of the structure of a hash table, taking into account any newly added items.