full stomach; stuffed
Describes the physical state of being completely full after eating. Often used adverbially as 腹一杯食べる.
I ate lunch until I was stuffed and couldn't move.
I'm full, so I'll skip dessert.
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.
On my day off, I read my favorite books to my heart's content.
I swam as much as I wanted in the sea and felt great.
I ate my fill of the feast.
On my day off I want to play to my heart's content.
I got full after eating ramen.