Describing one who gives you a glassy stare? (12)

I believe the answer is:

bespectacled

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'one who gives you a glassy stare?' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?

I don't understand the remainder of the clue.

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(Other definitions for bespectacled that I've seen before include "equipped with visual aid" , "Wearing glasses" , "Like Harry Potter" .)

I've seen this clue in The Irish Independent.

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