noun
Refers to curtains or drapes hung at a window. A straightforward noun with no special usage notes.
窓掛けを開けて、朝日を部屋に入れた。
I opened the curtains and let the morning sun into the room.
新しい窓掛けを買って、部屋の雰囲気を変えた。
I bought new curtains and changed the atmosphere of the room.
More common loanword for 'curtains' in modern Japanese. 窓掛け is a native Japanese word that may sound slightly more traditional or literary.
Compound of 窓 (mado, 'window') and 掛け (kake, 'hanging'), from the verb 掛ける (kakeru, 'to hang').