Swell with blood (7)
I believe the answer is:
engorge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">swell with blood</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for engorge that I've seen before include "Swell with blood, water, etc" , "Overeat" , "Cause to swell with fluid" , "Eat ravenously" , "Congest with blood - eat greedily" .)