Gaming houses (7)
I believe the answer is:
casinos
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gaming houses</span>' is the definition.<br/ ><span class="explanation-format__explanation">(casino is a kind of gaming house)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for casinos that I've seen before include "Gaming rooms" , "Gambling places" , "Gambling establishments" .)