In twain (7)
I believe the answer is:
asunder
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">in twain</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for asunder that I've seen before include "(Torn) into parts" , "(Break) apart" , "bits?" , "(Split) into pieces" , "Let no man put -" .)