Basque ball game (6)
I believe the answer is:
pelota
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">basque ball game</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pelota that I've seen before include "SPORT/GAME" , "Basque ball-game" , "Spanish game at Opel" , "Basque sport" , "Spanish game played with a ball and wickerwork racket" .)