Thing to put out at the end of today (7)
I believe the answer is:
tonight
'the end of today' is the definition.
(I've seen this before)
'thing to put out' is the wordplay.
'put out' indicates anagramming the letters.
'thing'+'to'='thingto'
'thingto' is an anagram of 'TONIGHT'.
'at' is the link.
(Other definitions for tonight that I've seen before include "Late today" , "Later today" , "What follows today" , "West Side Story number" , "Hotting (anag.)" .)