Conclusive evidence of strength of liquor (5)
I believe the answer is:
proof
This clue could be a double definition.
'conclusive evidence' is the first definition.
(I've seen this before)
'strength of liquor' is the second definition.
'proof' can be an answer for 'strength' (I've seen this before). I am not sure about the 'of liquor' bit.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for proof that I've seen before include "Specimen" , "Incontrovertible evidence" , "whisky's strength?" , "Strength of spirit" , "Evidence that establishes the truth" .)
