Scotsman behind whisky dispenser? Get some glasses here! (8)
I believe the answer is:
optician
'get some glasses here' is the definition.
(someone providing spectacles)
'scotsman behind whisky dispenser?' is the wordplay.
'scotsman' becomes 'ian' (common Scottish name).
'behind' says to put letters next to each other.
'whisky dispenser?' becomes 'optic' (I can't explain this - if you can you should believe this answer much more).
'ian' after 'optic' is 'OPTICIAN'.
Can you help me to learn more?
(Other definitions for optician that I've seen before include "Prescriber of glasses and contact lenses" , "Expert consulted for viewing" , "Maker-seller of spectacles" , "Glasses provider" , "One giving eye test" .)