Appointment (4)
There are a few possibilities for this:
nomination
'appointment' is the definition.
(appointment to a job)
This is all the clue.
(Other definitions for post that I've seen before include "Spot the mail" , "Prefix meaning after" , "Mail; office" , "picket" , "Appointment (with the Royal Mail?)" .)
'appointment' is the definition.
(I know that appointment can be written as date)
This is all the clue.
(Other definitions for date that I've seen before include "Romantic appointment" , "A social appointment - check calendar" , "Romantic assignation" , "To reveal age" , "For example, sell by" .)
'appointment' is the definition.
(I know that nomination is a type of appointment)
This is all the clue.
(Other definitions for nomination that I've seen before include "Naming" , "Putting forward (of a candidate)" .)