(n.) A grating of thin parallel bars, similar to a gridiron.

L R acting area andiron apron apron stage arabesque backstage band shell bandstand basketry basketwork black spot bloom blooping board bridge cancellation chain coal tongs coulisse crane crook cross-hatching crossing-out damper definition dock dressing room filigree fire hook fire tongs firedog flare flies fly floor fly gallery forestage fret fretwork fringe area ghost granulation grate grating greenroom griddle gridiron grill grille griller grillwork hachure hard shadow hatching image interlacement intertexture intertwinement lace lacery lacework lacing lattice latticework lifter lightboard mesh meshes meshwork multiple image net netting network noise orchestra orchestra pit performing area picture picture noise picture shifts pit plexure plexus poker pothook proscenium proscenium stage raddle rain reticle reticulation reticule reticulum riddle rolling salamander scanning pattern scintillation screen screening shading shell sieve snow snowstorm spit stage stage left stage right switchboard texture the boards tissue tongs tracery trellis trelliswork tripod trivet turnspit wattle weave weaving web webbing webwork weft wicker wickerwork wings