rehash

See also: re-hash

English

Etymology tree

Proto-Italic *wre-

Latin re-der.

Old French re-bor.

Middle English re-

English re-

English hash

English rehash

From re- + hash.

rehash (third-person singular simple present rehashes, present participle rehashing, simple past and past participle rehashed)

(transitive) To hash (chop food into small pieces) again.
- 1942 July 1, The Newcastle and Maitland Catholic Sentinel, Newcastle, NSW, page 224, column 2:
  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[.]
(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.

The general rehashed plans for the war.
(transitive) To analyze a prior contentious or embarrassing event.
Let's not rehash what we did last night.
(transitive, computing) To recompute the structure of a hash table, taking into account any newly added items.

to rework old material, redo some work, with some variations

rehash (plural rehashes)

Something reworked, or made up from old materials.
Synonyms: vamp, réchauffé

He wrote a bad rehash of an earlier essay.
(computing) A recomputation of the structure of a hash table, taking into account any newly added items.

something reworked, or made up from old materials