Definition
Used to describe something that is completely full or filled to maximum capacity.
十足、十分、完全
The audience packed the concert hall to the gills.
观众把音乐厅挤得水泄不通。
I packed my suitcase to the gills and it barely closed.
我把行李箱塞得满满的，几乎关不上。
After the Thanksgiving feast, we were all stuffed to the gills.
感恩节大餐后，我们都吃得撑到不行。