Packed to the gills adjective phrase informal
The word "packed" can be replaced by "full" or "stuffed" without changing the meaning.
If something is packed to the gills, it is completely full.
My mind is packed to the gills with the ideas for this project.
There are so many guests in the hall that it is packed to the gills.
The restaurant is always packed to the gills on Sundays.
1.(adj) Very busy
2. At maximum speed, efficiency, or power
From the beginning to the end.
Do something thoroughly, excellently, or perfectly
To eat to the point that you feel full and no longer hungry
Be completely full