It has a glazed look! (6)
I believe the answer is:
window
'it has a glazed look' is the definition.
The definition suggests a singular noun which matches the answer.
This is all the clue.
Can you help me to learn more?
(Other definitions for window that I've seen before include "See 1 down" , "Glassy area" , "Transparent panel of glass" , "See 8" , "One furthest from the aisle?" .)