When food digests or when you digest it, it passes through your body to your stomach. Your stomach removes the substances that your body needs and gets rid of the rest.

If you digest information, you think about it carefully so that you understand it.

If you digest some unpleasant news, you think about it until you are able to accept it and know how to deal with it.

A digest is a collection of pieces of writing. They are published together in a shorter form than they were originally published.