During interval half of cast, note, needed a drink (8)
I believe the answer is:
thirsted
'needed a drink' is the definition.
The answer and definition can be both related to consumption as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
'during interval half of cast note' is the wordplay.
'during' means one lot of letters goes inside another.
'interval' becomes 'third' (third is a kind of interval).
'half of cast note' becomes 'ste' (I can't explain this - if you can you should give a lot more credence to this answer).
'third' enclosing 'ste' is 'THIRSTED'.
Can you help me to learn more?
(Other definitions for thirsted that I've seen before include "wanted a beer maybe" , "Yearned for, being dehydrated?" , "Yearned for, feeling parched" , "dying for a drink" .)