Cast aren't impressed by glazed expression (5)
I believe the answer is:
stare
'glazed expression' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'cast aren't impressed' is the wordplay.
'STARE' is hidden in amongst the letters.
But, I am not sure how the hidden word is indicated.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for stare that I've seen before include "Gawp" , "'Look fixedly, without blinking (5)'" , "Look with fixed gaze" , "Long fixed look" , "Rates (anag.)" .)