Stein's face? (3)
I believe the answer is:
mug
This clue is a double definition.
'stein's' is the first definition.
(a stein is a mug-like vessel)
'face?' is the second definition.
(informal term for face)
(Other definitions for mug that I've seen before include "Slangy victim, by gum" , "person's face" , "Fool - face - vessel" , "attack" , "Drinking vessel for a chump" .)