What does snack on mean?
snack on
Definition
To eat a little of something between meals.
Example sentences
I only meant to snack on a couple of figs while I cooked, and now I've got no appetite for the dinner I made.
I keep a few plums on my desk to snack on when the afternoon calls drag on.
I keep a few plums on my desk to snack on when the afternoon calls drag on.