noun
plural -dards
a level of quality, achievement, etc., that is considered acceptable or desirable [count]
b standards [plural] :ideas about morally correct and acceptable behavior
[count] :something that is very good and that is used to make judgments about the quality of other things
[count] :a fixed official unit of measurement
[count] :a flag that is used in official ceremonies
[count] :a song that has been sung by many different artists
adjective
regularly and widely used, seen, or accepted :not unusual or special
generally accepted and used because of high quality or excellence
accepted and used by most of the educated speakers and writers of a language