All-night party (4)
I believe the answer is:
rave
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">all-night party</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rave that I've seen before include "Rage" , "Talk incoherently" , "Laudatory sort of review - quite a rant" , "Modern youth dance - sounds hysterical" , "Fume" .)