Wild party or getaway ends (4)
I believe the answer is:
orgy
'wild party' is the definition.
(I've seen this before)
'or getaway ends' is the wordplay.
'ends' suggests removing the centre.
'getaway' with its middle removed is 'gy'.
'or'+'gy'='ORGY'
(Other definitions for orgy that I've seen before include "A licentious immoral party" , "Wild licentious party" , "Riotous celebration" , "Wild overindulgent party" , "Excessive indulgence" .)