1. A wall constructed with a cavity or empty space between two layers of material, typically used for insulation, plumbing, or electrical wiring
The electrician ran the wires through the hollow wall to avoid surface clutter.
O eletricista passou os fios pela parede oca para evitar bagunça na superfície.
2. A double-wall construction technique in building that creates an air gap for thermal or acoustic insulation
Modern homes often use hollow walls for better energy efficiency.
As casas modernas frequentemente usam paredes ocas para maior eficiência energética.