One out? (7)
I believe the answer is:
escapee
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one out?</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 escapee that I've seen before include "One that's broken free" , "One running from prison" , "runner appears" , "One getting away" , "One absconding" .)