What is the meaning of standard?

noun

• A basis for comparison; a reference point against which other things can be evaluated.
  • usage: "the schools comply with federal standards"; "they set the measure for all subsequent work"
  • synonyms: criterion, measure, touchstone
• The ideal in terms of which something can be judged.
  • usage: "they live by the standards of their community"
  • synonyms: criterion
• A board measure = 1980 board feet.
• The value behind the money in a monetary system.
  • synonyms: monetary standard
• An upright pole or beam (especially one used as a support. )
  • usage: "distance was marked by standards every mile"; "lamps supported on standards provided illumination"
• Any distinctive flag.
  • synonyms: banner

adjective

• Conforming to or constituting a standard of measurement or value; or of the usual or regularized or accepted kind.
  • usage: "windows of standard width"; "standard sizes"; "the standard fixtures"; "standard brands"; "standard operating procedure"
• Commonly used or supplied.
  • usage: "standard procedure"; "standard car equipment"
• Established or well-known or widely recognized as a model of authority or excellence.
  • usage: "a standard reference work"; "the classical argument between free trade and protectionism"
• Conforming to the established language usage of educated native speakers) "standard English" (American); "received standard English is sometimes called the King's English" (British.
  • synonyms: received
• Regularly and widely used or sold.
  • usage: "a standard size"; "a stock item"
  • synonyms: stock