Prisons (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">prisons</span>' is the definition.<br/ ><span class="explanation-format__explanation">(cage is a kind of prison)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cages that I've seen before include "prisons" , "Enclosures made or wire or metal bars" , "Enclosures for animals" , "Wild animal enclosures" , "Locks up" .)
(Another definition for jails that I've seen is " Prisons".)