Meaning of “reflection” - Learner’s Dictionary

reflection

noun uk us /rɪˈflekʃən/
IMAGE [ C ]

B2 the image of something in a mirror, on a shiny surface, etc:

I saw my reflection in the window.
THOUGHT [ C, U ] formal

serious and careful thought:

He paused for reflection before answering my question.
On reflection (= after thinking again), I think I was wrong.
a reflection of sth

something that is a sign or result of a particular situation:

His poor job performance is a reflection of his lack of training.
a reflection on sb/sth

something that makes people have a particular opinion about someone or something, especially a bad opinion:

Low test scores are a sad reflection on our school system.

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