Meaning of “quality” - Learner’s Dictionary

quality

noun uk us /ˈkwɒləti/
GOOD OR BAD [ U ]

B1 how good or bad something is:

good/high quality
poor/low quality
The air quality in this area is terrible.
All we are asking for is a decent quality of life.
The spokeswoman says a quality control system is being developed for next year.
GOOD [ U ]

B1 the fact of being very good or well made:

A designer label isn't necessarily a guarantee of quality.
CHARACTER [ C ]

B2 part of the character or personality of someone or something:

leadership qualities
Joe has a lot of good qualities, but I don't think he has the ability to discipline the team.

(Definition of “quality noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)