A twister’s device to get a drink (9)
I believe the answer is:
corkscrew
'a drink' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'a twister's device' is the wordplay.
I cannot quite see how this works, but
'device' could be 'screw' (screw is a kind of device) and 'screw' is present in the answer.
The remaining letters 'cork' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'to get' is the link.
Can you help me to learn more?
(Other definitions for corkscrew that I've seen before include "Device used to get at red" , "Spiral device for wine lovers" , "Bordeaux might require this?" , "Twist" , "This might help one who gets in the drink" .)