Emily Dickinson Lexicon

HOL'LOW, a. [Sax. hol; G. hohl; D. hol; Sw. hålig; Dan. huled; Arm. goullo, or houllu, emptied. See Hole.]

1. Containing an empty space, natural or artificial, within a solid substance; not solid; as, a hollow tree; a hollow rock; a hollow sphere. Hollow with boards shalt thou make it. Exod. xxvii.
2. Sunk deep in the orbit; as, a hollow eye.
3. Deep; low; resembling sound reverberated from a cavity, or designating such a sound; as, a hollow roar. Dryden.
4. Not sincere or faithful; false; deceitful; not sound; as, a hollow heart; a hollow friend. Milton. Shak. Hollow spar, the mineral called also chiastolite.