1.
a. trans. To fill like a honeycomb with cells, cavities, or perforations; to render cavernous, hollow, or insubstantial in this way; to undermine.
b. intr. for (pass.) To become cavernous.

2. (fig.) To penetrate through and through so as to render hollow, rotten, etc.; to undermine.

3. trans. To mark with a honeycomb pattern.

4. (Building) . To build as a honeycomb wall.

Oxford English Dictionary, 2nd Edition