A sunken area or unfilled space in something solid; a cavity, natural or artificial.
A sunken area.
A small valley between mountains.
A feeling of emptiness.
To call or urge by shouting; to hollo.
to make a hole in something; to excavate
Concave; gaunt; sunken.
Insincere, devoid of validity; specious.
Distant, eerie; echoing, reverberating, as if in a hollow space; dull, muffled; often low-pitched.
Without substance; having no real or significant worth; meaningless.
Pertaining to hollow body position
Having an empty space or cavity inside.
Completely, as part of the phrase beat hollow or beat all hollow.
The hole produced when drilling an oil or gas well.