Coulisse

[ku:'li:s]

(noun.) a timber member grooved to take a sliding panel.

(noun.) a flat situated in the wings.

Checked by Abby--From WordNet

(n.) A piece of timber having a groove in which something glides.

(n.) One of the side scenes of the stage in a theater, or the space included between the side scenes.

Checked by Bryant

n. a piece of grooved wood as the slides in which the side-scenes of a theatre run—hence the side-scene of a theatre.

Editor: Ricky