Die; transmit (4,2)
I believe the answer is:
pass on
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">die</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(pass on can mean to die)</span><br/ ><br/ >'<span class="explanation-format__original">transmit</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know this)</span><br/ ><br/ ></span>
(Other definitions for pass on that I've seen before include "Hand over - die" , "go forward" , "Bequeath" , "Refuse" .)