Inflexible or without exception.
Made of cast iron.
Durable; tough; resilient.
A hard and brittle, but strong, alloy of iron, carbon, and silicon, formed by casting in a mould.
Insincere, devoid of validity; specious.
Concave; gaunt; sunken.
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.
To call or urge by shouting; to hollo.
to make a hole in something; to excavate
Completely, as part of the phrase beat hollow or beat all hollow.
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.