Learner's definition of SUPPER
1 : the evening meal — used especially to refer to an informal meal that you eat at home
It's almost time for supper.
We had supper together.
We took a walk after supper.
I had too much wine at supper.
He didn't come home for supper.
2 [count], chiefly US : a social event especially for raising money that takes place in the evening and includes a meal 3 [count, noncount], chiefly British : a light meal or snack that is eaten late in the evening