rehash

Verb

rehash (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.
   • 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.
   • Today's parliamentary session only rehashed last week's arguments.
   • The CEO of the company only rehashed a speech for the news conference.
3. (transitive) To analyze a prior contentious or embarrassing event.
   • Let's not rehash what we did last night.
4. (transitive) To recompute the structure of a hash table, taking into account any newly added items.

Noun

IPA/ˈɹiːˌhæʃ/

rehash (plural rehashes)

1. Something reworked, or made up from old materials.
   • He wrote a bad rehash of an earlier essay.

   Synonyms:

   vamp, réchauffé

2. A recomputation of the structure of a hash table, taking into account any newly added items.