pane

pane [-s] n

Fr. pan < L. pannus, a piece of cloth.

1. Glass; window; thin, flat piece of transparent glass set in a frame to allow light to enter a room; opening in a wall through which the outside world may be viewed.
2. [Fig.] eye.
3. Phr. “On the pane”: at the door; [fig.] near; approaching; close at hand.