Standing clock (4)
I believe the answer is:
face
This clue is a double definition.
'standing' is the first definition.
(thesaurus)
'clock' is the second definition.
(thesaurus)
(Other definitions for face that I've seen before include "Surface; visage" , "Outward appearance" , "Come up against" , "well-known person" , "Front -- confront" .)