An opening constructed in a wall or roof that functions to admit light or air to an enclosure and is often framed and spanned with glass mounted to permit opening and closing.

• 窗，窗口，窗户墙上或房顶上建造的出口，作用是使光线或空气进入室内，通常有框架和拱门，安装有玻璃，使之能开能关