Through which spirit is poured out of sight (5)
I believe the answer is:
optic
This clue is a double definition.
'through which spirit is poured out' is the first definition.
'of sight' is the second definition.
(Other definitions for optic that I've seen before include "Device for measuring out spirits" , "Pub measure" , "Relating to vision" , "Of the eye - drinks dispenser" , "Topic (anag.)" .)