Coulisse
Pronunciation : Cou*lisse" (k-ls"; F. k`ls")
Part of Speech : n.
Etymology : [F., fr. couler to flow, glide.]
Definition : 1. A piece of timber having a groove in which something glides.
2. One of the side scenes of the stage in a theater, or the space included between the side scenes.
Source : Webster's Unabridged Dictionary, 1913