Definition of "rehash"

rehash

/ɹiːˈhæʃ/

verb
third-person singular simple present rehashes, present participle rehashing, simple past and past participle rehashed
1. (transitive) To hash (chop food into small pieces) again.
  Quotations
  I never did care for Sunday joint that was served up cold on Monday, hashed on Tuesday, rissoled on Wednesday, and re-hashed on Thursday[.]
  1942 July 1, The Newcastle and Maitland Catholic Sentinel, Newcastle, NSW, page 224, column 2
2. (transitive) To repeat with minor variation.
3. (transitive) To analyze a prior contentious or embarrassing event.
4. (transitive, computing) To recompute the structure of a hash table, taking into account any newly added items.
noun
plural rehashes
1. Something reworked, or made up from old materials.
2. (computing) A recomputation of the structure of a hash table, taking into account any newly added items.