Advertise delivery job (4)
I believe the answer is:
post
I believe this is a triple definition!
'advertise' is the first definition.
(thesaurus)
'delivery' is the second definition.
(I've seen this before)
'job' is the third definition.
(post is a kind of job)
(Other definitions for post that I've seen before include "Prefix meaning after" , "Publicly display; send" , "Publish' mail' job" , "type of support" , "Put a letter in the box - stop it" .)