[count] or bookmarker /ˈbʊkˌmɑɚkɚ/ :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

[+ obj] computers :to create a computer bookmark for (something, such as an Internet site)