Lost blood (4)
I believe the answer is:
bled
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lost blood</span>' is the definition.<br/ ><span class="explanation-format__explanation">('bleed' can be a synonym of 'lose blood')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bled that I've seen before include "Haemorrhaged" , "Showed effects of injury" , "Lost blood" , "Extracted blood as treatment" , "Seeped (into an adjoining colour)" .)