Meaning of NORM in English

[noun] [C]A norm is an accepted standard or a way of behaving or doing things that most people agree with.Europe's varied cultural, political and ethical normsMost large Parisian tourist developments are designed to reflect specifically French norms and values.The play is a sympathetic comment on individuals who stray from the norms of the society in which they live.One child per family is becoming the norm in some countries.

Cambridge English vocab.      Кембриджский английский словарь.