norm

noun

1. a standard or model or pattern regarded as typical

   noun.linkdef

   Examples

   The current middle-class norm of two children per family.

   Source: WordNet 3.0

2. a statistic describing the location of a distribution

   noun.cognition

   Examples

   It set the norm for American homes.

   Synonyms average

   Source: WordNet 3.0

3. A rule or authoritative standard; a model; a type.

   noun

   Source: webster1913