Collared (8)
I believe the answer is:
arrested
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">collared</span>' is the definition.<br/ ><span class="explanation-format__explanation">('arrest' can be a synonym of 'collar')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for arrested that I've seen before include "Taken into custody or stopped" , "captured" , "Taken into police custody" , "Taken into custody, being serrated" , "Seized and took into custody" .)