Bags full of any number of nuts, bananas, crackers, etc (6)
I believe the answer is:
snacks
'nuts bananas crackers etc' is the definition.
I can't judge whether this definition defines the answer.
'bags full of any number' is the wordplay.
'bags' becomes 'sacks' (sack is a kind of bag).
'full of' is an insertion indicator.
'any number' becomes 'n' (mathematical symbol for an unspecified number).
'sacks' placed around 'n' is 'SNACKS'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for snacks that I've seen before include "Light informal meals" , "Nibbles" , "Light bites such as crisps" , "Small or casual meals, often hurried" , "Small food amounts between main meals" .)