- Hash
Hash may refer to:
* Hash symbol, #, called "number sign" or "pound sign" in the USA and
Canada
*Hashish , a psychoactive drug derived from the "Cannabis" plant
*Hash (food) , a coarse chunky mixture of beef and other things, e.g. "corned beef hash"; cf.Hash brown
*Hash House Harriers , a loosely-organized group of social organizations focused on running and camaraderie; also referred to as "hashing"Hash function
Hash function is a small digital "fingerprint" made from any kind of data. Some types are:
*Cryptographic hash function , a hash function suitable for use in information security
*Hash table , a data structure associating keys with values using a hash function
*Associative array , an abstract data type often implemented as a hash table
*Geometric hashing , a method for efficiently finding geometric objects of the same or similar shapeHash mark
Hash mark may refer to:
*Hatch mark , in mathematics, sometimes called a "hash mark" or "tick mark", a short line perpendicular to an axis in analytic geometry
*Hash marks , the markings on hockey rinks and gridiron football fields
*Service stripe , commonly called a "hash mark", a decoration of the United States military
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