Dark ending that's oddly edited out (5)
I believe the answer is:
night
'dark' is the definition.
(it's dark at nighttime)
'ending that's oddly edited out' is the wordplay.
'oddly edited out' means one should take alternating letters (letters in odd-numbered positions removed).
'ending'+'that'='endingthat'
The alternating letters of 'endingthat' are 'NIGHT'.
(Other definitions for night that I've seen before include "- School, - owl" , "'Red sky at . . . . ., shepherd's delight'" , "From dusk until dawn" , "The dark time" , "Time of darkness" .)