Pinch a little whisky (3)
I believe the answer is:
nip
'pinch' is the definition.
(nip can mean to pinch or bite)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nip that I've seen before include "Swift bite" , "Shot" , "Feeling cold" , "Dram of spirits" , "Pinch with small drink" .)