Willing to empty garbage outside before noon (4)
I believe the answer is:
game
'willing' is the definition.
(thesaurus)
'empty garbage outside before noon' is the wordplay.
'empty' means to remove the middle letters.
'outside' is an insertion indicator.
'before noon' becomes 'am'.
'garbage' with its centre taken out is 'ge'.
'ge' going around 'am' is 'GAME'.
'to' acts as a link.
(Other definitions for game that I've seen before include "have a flutter" , "Sport - amusement" , "Eager and willing to accept challenge" , "Pastime; brave" , "Animal hunted for food or sport" .)