The Collaborative International Dictionary of English v.0.48:
Hollow \Hol"low\, a. [OE. holow, holgh, holf, AS. holh a hollow,
hole. Cf. Hole.]
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.
2. Depressed; concave; gaunt; sunken.
With hollow eye and wrinkled brow. --Shak.
3. Reverberated from a cavity, or resembling such a sound;
deep; muffled; as, a hollow roar. --Dryden.
4. Not sincere or faithful; false; deceitful; not sound; as,
a hollow heart; a hollow friend. --Milton.
Hollow newel (Arch.), 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
Hollow quoin (Engin.), 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. (Bot.) See Moschatel.
Hollow square. See Square.
Hollow ware, hollow vessels; -- a trade name for cast-iron
kitchen utensils, earthenware, etc.
Syn: Syn.- Concave; sunken; low; vacant; empty; void; false;
faithless; deceitful; treacherous.