Symbol of life (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">symbol of life</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 ankh that I've seen before include "Sign of life" , "Ancient Egyptian symbol of life - khan (anag)" , "Hank (anag) - cross symbolising eternal life" , "Waylay" , "Cross with a loop at the top, symbol of life in ancient Egypt" .)
(Other definitions for heartbeat that I've seen before include "Essential pulsation" , "Circulation noise" , "Pulse of cardiac origin" , "Animating force" .)