Plant ovule (4)
I believe the answer is:
seed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">plant ovule</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for seed that I've seen before include "One of the outstanding players in a tournament" , "It can develop into a plant" , "who is ranked highly" , "High-ranked player in a knock-out tournament" , "Local escorted" .)