Frog's eggs (5)
I believe the answer is:
spawn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">frogs' eggs</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 spawn that I've seen before include "Eggs of fish, frogs, etc" , "(Of fish) release eggs" , "Produce" , "Eggs deposited by fish" , "Eggs deposited by amphibians" .)