standard (Noun) — A basis for comparison; a reference point against which other things can be evaluated. ex. "the schools comply with federal standards"
standard (Noun) — The ideal in terms of which something can be judged. ex. "they live by the standards of their community"
standard (Noun) — A board measure = 1980 board feet.
standard (Noun) — The value behind the money in a monetary system.
standard (Noun) — An upright pole or beam (especially one used as a support). ex. "distance was marked by standards every mile" ex. "lamps supported on standards provided illumination"
standard (Noun) — Any distinctive flag.
standard (Adjective) — Conforming to or constituting a standard of measurement or value; or of the usual or regularized or accepted kind. ex. "windows of standard width" ex. "standard sizes" ex. "the standard fixtures" ex. "standard brands" ex. "standard operating procedure"
standard (Adjective) — Commonly used or supplied. ex. "standard procedure" ex. "standard car equipment"
standard (Adjective) — Established or well-known or widely recognized as a model of authority or excellence. ex. "a standard reference work"
standard (Adjective) — (linguistics) conforming to the established language usage of educated native speakers. ex. "standard English" ex. "received standard English is sometimes called the King's English"
standard (Adjective) — Regularly and widely used or sold. ex. "a standard size"