Penal institution (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">penal institution</span>' is the definition.<br/ ><span class="explanation-format__explanation">(prison is a kind of penal institution)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for prison that I've seen before include "Correctional institution" , "Stir - can" , "punishment" , "Cooler" , "Nick" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">penal institution</span>' is the definition.<br/ ><span class="explanation-format__explanation">(Borstal is an example)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for borstal that I've seen before include "Old reform school for youths" , "Detention centre" , "offenders used to be confined here" , "Former establishment for offenders aged 15 to 21" , "Penal institution" .)