This is the 7504th most frequent German word.
gläsernen
"Gläsernen" means "made of glass" or "transparent" in English.
In this sentence, 'gläsernen' is an adjective describing 'Wände' (walls), specifying them as made of glass and allowing transparency.
Die gläsernen Wände des Wintergartens lassen viel Licht herein.
The transparent glass walls of the conservatory let in a lot of light.
Here, 'gläserne' is used as an adjective modifying 'Tisch' (table), indicating it is constructed from glass.
Der gläserne Tisch im Wohnzimmer ist zerbrechlich.
The glass table in the living room is fragile.
In this example, 'gläsernen' metaphorically describes 'Gesellschaft' (society) to imply transparency or lack of privacy.