noun

• (typography) The # symbol (octothorpe, pound).
• (computing) The result generated by a hash function.
• (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.
• (Scotland) A stupid fellow.

verb

• (transitive) To chop into small pieces, to make into a hash.
  "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."
• (computing, transitive) To transform according to a hash function.
• (transitive, colloquial) To make a mess of (something); to ruin.
  "[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.""

noun

• (slang) Hashish, a drug derived from the cannabis plant.