norm /ˈnɔ(ə)rm/ 名詞
1. A rule or authoritative standard; a model; a type; as, deviations from the norm are not tolerated.
2. Biol. A typical, structural unit; a type.
n 1: a standard or model or pattern regarded as typical; "the
current middle-class norm of two children per family"
2: a statistic describing the location of a distribution; "it
set the norm for American homes" [syn: average]