: something (such as a piece of paper) that is put in a book to show the place where you stopped reading
computers : something (such as a menu entry or icon) that allows you to go quickly and directly to something (such as an Internet site) that you have seen before
computers : to create a computer bookmark for (something, such as an Internet site)
What made you want to look up bookmark? Please tell us where you read or heard it (including the quote, if possible).