Having worn corners (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">having worn corners</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dog-eared that I've seen before include "Of book, with pages turned down at corners" , "Of book, with pages crumpled at the corners" , "Shabby with corners of pages turned down" , "(Of pages) having corners turned down or worn" , "Agree odd description of book with bent pages (3-5)" .)