01 a. Having an empty space or cavity, natural or artificial, within a solid substance; not solid; excavated in the interior; as, a hollow tree; …
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1.
Having an empty space or cavity, natural or artificial, within a solid substance; not solid; excavated in the interior; as, a hollow tree; a hollow sphere.“Hollow with boards shalt thou make it.” — Ex. xxvii. 8.
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2.
Depressed; concave; gaunt; sunken.“With hollow eye and wrinkled brow.” — Shak.
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3.
Reverberated from a cavity, or resembling such a sound; deep; muffled; as, a hollow roar.
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4.
Not sincere or faithful; false; deceitful; not sound; as, a hollow heart; a hollow friend.
Phrases & compounds
Hollow newel —
an opening in the center of a winding staircase in place of a newel post, the stairs being supported by the wall; an open newel; also, the stringpiece or rail winding around the well of such a staircase.
Hollow quoin —
a pier of stone or brick made behind the lock gates of a canal, and containing a hollow or recess to receive the ends of the gates.
Hollow root —
See Moschatel.
Hollow square —
See Square.
Hollow ware —
hollow vessels; -- a trade name for cast-iron kitchen utensils, earthenware, etc.