Crossbred, of mixed ancestry (6)
I believe the answer is:
hybrid
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">crossbred</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">of mixed ancestry</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for hybrid that I've seen before include "Cross breed" , "Genetic cross" , "Cross of two different species or varieties" , "Plant that is the offspring of two different species" , "Like a mule" .)