1. : in one's stomach
a couple of drinks under his belt
2. : in one's possession
with four flourishing papers under their belts — Newsweek
: as part of one's past or experience
she now had three great classic roles under her belt — Agnes de Mille
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under one's belt (figurative)
Firmly and irrevocably secured or in one's possession
• • •
Main Entry: ↑belt
* * *
1) safely or satisfactorily achieved, experienced, or acquired
I want to get more experience under my belt | he now has almost a year as president under his belt
2) (of food or drink) consumed
Gus already had a large brandy under his belt
Useful english dictionary. 2012.