hollow

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. [ 1913 Webster ]

Hollow with boards shalt thou make it. Ex. xxvii. 8. [ 1913 Webster ]

2. Depressed; concave; gaunt; sunken. [ 1913 Webster ]

With hollow eye and wrinkled brow. Shak. [ 1913 Webster ]

3. Reverberated from a cavity, or resembling such a sound; deep; muffled; as, a hollow roar. Dryden. [ 1913 Webster ]

4. Not sincere or faithful; false; deceitful; not sound; as, a hollow heart; a hollow friend. Milton. [ 1913 Webster ]

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 staircase. --
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.- Concave; sunken; low; vacant; empty; void; false; faithless; deceitful; treacherous. [ 1913 Webster ]

n. 1. A cavity, natural or artificial; an unfilled space within anything; a hole, a cavern; an excavation; as the hollow of the hand or of a tree. [ 1913 Webster ]

2. A low spot surrounded by elevations; a depressed part of a surface; a concavity; a channel. [ 1913 Webster ]

Forests grew
Upon the barren hollows. Prior. [ 1913 Webster ]

I hate the dreadful hollow behind the little wood. Tennyson. [ 1913 Webster ]

v. t. [ imp. & p. p. Hollowed p. pr. & vb. n. Hollowing. ] To make hollow, as by digging, cutting, or engraving; to excavate. “Trees rudely hollowed.” Dryden. [ 1913 Webster ]

adv. Wholly; completely; utterly; -- chiefly after the verb to beat, and often with all; as, this story beats the other all hollow. See All, adv. [ Colloq. ] [ 1913 Webster ]

The more civilized so-called Caucasian races have beaten the Turks hollow in the struggle for existence. Darwin. [ 1913 Webster ]

interj. [ See Hollo. ] Hollo. [ 1913 Webster ]

v. i. To shout; to hollo. [ 1913 Webster ]

Whisperings and hollowings are alike to a deaf ear. Fuller. [ 1913 Webster ]

adj. having a cavity within; as, canoe made of a hollowed log. [ WordNet 1.5 ]

a. Insincere; deceitful; not sound and true; having a cavity or decayed spot within.

Syn. -- Faithless; dishonest; false; treacherous. [ 1913 Webster ]