Rod, having wasted time, also stops for snack (8)
I believe the answer is:
sandwich
'snack' is the definition.
(I've seen this before)
'rod having wasted time also stops' is the wordplay.
I cannot quite understand how this works, but
'also' could be 'and' (I've seen this before) and 'and' is present in the answer.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for sandwich that I've seen before include "Filled sponge cake" , "Maybe double-decker" , "Bread-based snack" , "Make it with bread and a filling" , "Snack with bread" .)