Globe cast primarily from The Glass ...? (6)
I believe the answer is:
goblet
'the glass ?' is the definition.
(goblet is a kind of glass )
'globe cast primarily' is the wordplay.
'cast' indicates anagramming the letters.
'primarily' becomes 't' (I can't explain this - if you can you should give a lot more credence to this answer).
'globe' with letters rearranged gives 'goble'.
'goble'+'t'='GOBLET'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for goblet that I've seen before include "Large drinking cup" , "Drinking glass with stem and foot" , "Stemmed drinking glass" , "Drinking-glass with stem and foot" , "Chalice" .)