lightwell From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounAn open shaft that transmits light from above into a staircase or an inner room. Related wordsSynonymsair wellairshaftvent shaftventilation shaftwellstairwelllooplightroof lightdreamholerooflightwellholelightavenlight pipeskylightabatjourlanternair shaft References Wiktionary — lightwell Wikipedia — lightwell