hallow

noun

(obsolete outside set phrases) A saint; a holy person; an apostle.

verb

To make holy, to sanctify.

noun

A shout, cry; a hulloo.

verb

To shout, especially to urge on dogs for hunting.

1. (of something solid) Having an empty space or cavity inside.

   a hollow tree; a hollow sphere

2. (of a sound) Distant, eerie; echoing, reverberating, as if in a hollow space; dull, muffled; often low-pitched.

   He let out a hollow moan.

3. Without substance; having no real or significant worth; meaningless.

   a hollow victory

4. Insincere, devoid of validity; specious.

   a hollow promise

5. Concave; gaunt; sunken.
6. Pertaining to hollow body position