Commotion; prison (4)
I believe the answer is:
stir
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">commotion</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(stir can mean a commotion)</span><br/ ><br/ >'<span class="explanation-format__original">prison</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(informal term for prison)</span><br/ ><br/ ></span>
(Other definitions for stir that I've seen before include "Cause trouble" , "Act as an agitator" , "Agitation - prison" , "move very slightly, or agitate" , "Cause to move in slangy prison" .)