Recreation ground (4)
I believe the answer is:
park
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">recreation ground</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for park that I've seen before include "Green or Hyde" , "Area for recreation in a city" , "Recreational area - align a car in a bay" , "Open space for recreational use" , "area of open land" .)