One day (10)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one day</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for eventually that I've seen before include "At last" , "sooner or later" , "Finally" , "In the end" , "In the fullness of time" .)