Under (one's) belt American British prepositional phrase
This phrase often goes with the verbs "have" and "get".
Used to indicate that one has mastered or succeeded in doing something
Having got a few required certificates under my belt, I could graduate from the university after this month.
Jenny seems to be more flexible after she has a year of working under her belt.
All candidates are required to get a college degree under their belts to apply for this company.
To memorize something so well that you can say or do it without having to try or think
To learn or memorize something without any efforts.
Used to describe starting to understand or learn about something.
One very nearly achieved or got something, but in the end you just failed, or there is still some difficulty to do before that can happen.
To obtain something or gain the right to access to a certain location or object via deception