Thrill ride cry (4)
I believe the answer is:
whee
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">thrill ride cry</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for whee that I've seen before include "Exclamation of excitement when going fast" , "Exuberant cry" , "Expression of delight" , "What fun" , "I'm going downhill, fast!" .)