Worship silver in cups (6)
I believe the answer is:
homage
'worship' is the definition.
(thesaurus)
'silver in cups' is the wordplay.
'silver' becomes 'ag' (Ag is the chemical symbol for silver).
'in' is an insertion indicator.
'cups' becomes 'home' (I can't explain this - if you can you should give a lot more credence to this answer).
'ag' placed into 'home' is 'HOMAGE'.
Can you help me to learn more?
(Other definitions for homage that I've seen before include "Things said as mark of respect" , "Public show of respect" , "Respect - acknowledgement of allegiance" , "Dutiful reverence" , "respectful acknowledgment" .)