Couple of shakes, very little (6)
I believe the answer is:
minute
'very little' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for minute that I've seen before include "Very small, like unit of time" , "Measure of time" , "Small, tiny" , "A few ticks" , "Infinitesimal" .)