Hold up cup (3)
I believe the answer is:
mug
This clue is a double definition.
'hold up' is the first definition.
(I know that mug is a more specific form of hold up)
'cup' is the second definition.
(I've seen this before)
(Other definitions for mug that I've seen before include "A person easily deceived, by gum" , "person's face" , "In slang, a person easily deceived" , "Drinking vessel, by gum" , "Fall guy" .)