Fish-eggs (3)
I believe the answer is:
roe
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">fish</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">eggs</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(fish eggs)</span><br/ ><br/ ></span>
(Other definitions for roe that I've seen before include "A mass of fish-eggs" , "eg Caviare" , "Food from fish" , "Part of fish, sounds like go through water" , "Lobster's ripe ovary" .)