from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Abbreviation of peso.
  • noun Abbreviation of dollar.
  • noun figuratively A substitute for the letter S or a space or hyphen used as a symbol of (perceived) greedy business practices
  • noun programming used to indicate a variable
  • noun computer science (parsers, regexes) end of input token


from Wiktionary, Creative Commons Attribution/Share-Alike License

$ appears to have evolved ca 1775 in the United States from a common abbreviation for pesos, also known as piastres or pieces of eight, a P–raised S ligature PS that passed through a stage resembling ֆ. It was used in the US before the adoption of the dollar in 1785.


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