noun, adverb
full stomach; stuffed
Describes the physical state of being completely full after eating. Often used adverbially as 腹一杯食べる.
昼ごはんを腹一杯食べて、動けなくなった。
I ate lunch until I was stuffed and couldn't move.
腹一杯になったので、デザートはやめておきます
I'm full, so I'll skip dessert.
adverb
to one's heart's content; as much as one wants
Used for doing something to the fullest extent, not limited to eating. Often implies satisfaction or indulgence.
休日は好きな本を腹一杯読んだ。
On my day off, I read my favorite books to my heart's content.
海で腹一杯泳いで、とても気持ちよかった。
I swam as much as I wanted in the sea and felt great.