panel

Three blows were struck upon the panel of the door.

I went to my work as usual at ten o’clock, but the door was shut and locked, with a little square of cardboard hammered on to the middle of the panel with a tack.

Monte Cristo watched him till he disappeared, and then touched a spring in a panel made to look like a picture, which, in sliding partly from the frame, discovered to view a small opening, so cleverly contrived that it revealed all that was passing in the drawing-room now occupied by Cavalcanti and Andrea.