Turn to snack (4)
I believe the answer is:
roll
This clue could be a double definition.
'turn' is the first definition.
(I know that roll is a type of gyration)
'snack' is the second definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'to' is the link.
Can you help me to learn more?
(Other definitions for roll that I've seen before include "Bread - list - drumbeats" , "Drumming pattern" , "Bakery product" , "start a revolution" , "start recording film" .)