Throw overboard (8)
I believe the answer is:
jettison
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">throw overboard</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for jettison that I've seen before include "bin" , "Deliberately dump overboard" , "Throw (into the sea)" , "Reject" , "Chuck overboard" .)