2. An organ pipe sounded by means of a current of air striking a lip in the side of the pipe and causing the air within to vibrate: The flue of the organ had to be repaired first before the organist could play.
Fluis both affirmative and negative; sometimes the eyes have it and sometimes the nose.
A chimney cleaner was telling a customer that he and his partner clean chimneys with a big blast of air called a flue shot.
Benjamin caught the flu the same evening as the flue of the chimney was blocked and the room had become smoky. He had to go to bed and from the window he watched how the airplanes flew over the trees on their way to the airport.