nosh on (something)
To snack on something. Primarily heard in UK. He sat there happily noshing on a chocolate bar and watching cartoons.
nosh on something
to make a snack of something. After Thanksgiving, we noshed on turkey for three days. Who's been noshing on the chocolate cake?
To eat something as a snack or a light meal: At the reception, the guests noshed on bagels, cream cheese, and lox.