Peach or beech (4)
I believe the answer is:
tree
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">peach</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">beech</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for tree that I've seen before include "Beech, for example" , "Plant with trunk (which families have)" , "Diagram representing different relationships" , "Oak, for example" , "Tall perennial plant" .)