Definition of "hash"

hash¹

/ˈhæʃ/

noun
plural hashes
1. Food, especially meat and potatoes, chopped and mixed together. corn-beef hash
  Quotations
  I had for them, after oysters, at first course, a hash of rabbits, a lamb, and a rare chine of beef.
  1633, Samuel Pepys, Diary
2. A confused mess.
  Quotations
  Oh! no, not Naylor's--the girls have made a hash there, as they do everything else; but we will settle her before they come out again.
  1847, Charlotte Yonge, Scenes and Characters
3. (typography) The # symbol (octothorpe, pound).
4. (computing) The result generated by a hash function.
5. (computing, cryptocurrencies) One guess made by a mining computer in the effort of finding the correct answer which releases the next unit of cryptocurrency; see also hashrate.
6. A new mixture of old material; a second preparation or exhibition; a rehashing.
  Quotations
  I cannot bear elections, and still less the hash of them over again in a first session.
  October 28, 1752, Horace Walpole, letter to Sir Horace Mann
7. A hash run.
  Quotations
  Most hashes are planned as family affairs, with a shorter "puppy" trail laid for the children.
  1987, Susan Scott-Stevens, Foreign Consultants and Counterparts, page 81
8. (Scotland) A stupid fellow.
verb
third-person singular simple present hashes, present participle hashing, simple past and past participle hashed
1. (transitive) To chop into small pieces, to make into a hash.
  Quotations
  In like manner, we shall represent human nature at first to the keen appetite of our reader, in that more plain and simple manner in which it is found in the country, and shall hereafter hash and ragoo it with all the high French and Italian seasoning of affectation and vice which courts and cities afford.
  1749, Henry Fielding, The History of Tom Jones, a Foundling
  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. To make a quick, rough version.
3. (computing, transitive) To transform according to a hash function.
4. (transitive, colloquial) To make a mess of (something); to ruin.
  Quotations
  [Julie Jacquette]: "All right, you've hashed it. I knew damn well you should have stayed in the other room. Now he knows he'll have to kill you too."
  1966, Rex Stout, Death of a Doxy

hash²

/ˈhæʃ/

noun
uncountable
1. (informal) Hashish, a drug derived from the cannabis plant.