dog-eared

adjective

1. 1

   (of a page in a book) Bent or slightly ragged in appearance, especially due to having been read many times.

   “The pages in his favorite book were dog-eared from years of reading it at bedtime.”

2. 2

   (of a page in a book) Having the corner folded over, as a sort of bookmark.

   “By thumbing to the dog-eared pages, she quickly found the items in the catalog she wanted to order.”