Hash

Hash, hashes, hash mark, or hashing may refer to:

Substances

• Hash (food), a coarse mixture of ingredients, often based on minced meat
• Hash (stew), a pork and onion-based gravy found in South Carolina
• Hash, a nickname for hashish, a cannabis product

Hash mark

• Hash mark (sports), a marking on hockey rinks and gridiron football fields
• Hatch marks, hash marks or tick marks, a form of mathematical notation
• Number sign (#), also known as the hash, hash mark, or (in American English) pound sign
• Service stripe, a military and paramilitary decoration
• Tally mark, a counting notation
• Checkmate symbol in chess

Computing

• Hash function, an encoding of data into a small, fixed size; used in hash tables and cryptography
  • Hash table, a data structure using hash functions
  • Cryptographic hash function, a hash function used to authenticate message integrity
• URI fragment, in computer hypertext, a string of characters that refers to a subordinate resource
• Geohash, a spatial data structure which subdivides space into buckets of grid shape
• Hashtag, a form of metadata often used on social networking websites
• hash (Unix), an operating system command
• Hash chain, a method of producing many one-time keys from a single key or password
• Password hash
• Zobrist hashing, a method of hashing chess positions into a key

Other uses

• Hash House Harriers, a running club
• Hash (EP) ([#]), a 2020 EP by Loona
• Fossil hash, a rock composed primarily of fragmented fossils

See also

• Hash browns
• Hash House (disambiguation)
• Hashtag (disambiguation)
• Hachis parmentier, a name for shepherd's pie
• Hatching, graphic procedure and pattern
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