Foremost part or surface (5)
I believe the answer is:
front
I believe this clue is a double definition.
'foremost part' is the first definition.
(I've seen this in another clue)
'surface' is the second definition.
(I know that front is a type of face)
(Other definitions for front that I've seen before include "Vanguard; where armies fight" , "Forepart - audacity" , "Present" , "Forward part - weather feature" , "Seaside promenade" .)