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LampPro Tip 1/2
Physical emptinessPlay
Use 'hollow' to describe objects that are empty on the inside, like tubes or boxes. SlideShe tapped the wall, looking for the hollow parts.
LampPro Tip 2/2
Sound qualityPlay
'Hollow' can also describe a sound that echoes, as if coming from an empty space. SlideThe room's acoustics made her voice sound hollow.