hollow
(geography) A small valley between mountains.
This road leads through a sandy hollow shaded by trees for about a quarter of a mile, where it crosses the bridge famous in goblin story, and just beyond swells the green knoll on which stands the whitewashed church.
A sunken area on a surface.
An unfilled space in something solid; a cavity, natural or artificial.
(figuratively) A feeling of emptiness.
to make a hole in something; to excavate
(of something solid) Having an empty space or cavity inside.
(of a sound) Distant, eerie; echoing, reverberating, as if in a hollow space; dull, muffled; often low-pitched.
(figuratively) Without substance; having no real or significant worth; meaningless.
(figuratively) Insincere, devoid of validity; specious.
Concave; gaunt; sunken.
(gymnastics) Pertaining to hollow body position
(colloquial) Completely, as part of the phrase beat hollow or beat all hollow.
To call or urge by shouting; to hollo.