Empty out shower at end of day (5)
I believe the answer is:
drain
'empty out' is the definition.
(thesaurus)
'shower at end of day' is the wordplay.
'shower' becomes 'rain' (synonyms).
'at end of' says to put letters next to each other.
'day' becomes 'd'.
'rain' after 'd' is 'DRAIN'.
(Other definitions for drain that I've seen before include "Nadir (anag.)" , "Drink dry" , "Remove liquid from" , "Waste channel" , "Wasted down here" .)