This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Having a perforated structure, resembling a honeycomb.

adj. Formed or perforated like a honeycomb.

Perforated or excavated like a honeycomb; specifically, having little cells, as cast metal when not solid.

Decorated with a honeycomb pattern—either the Mayflower pattern or one of hexagons.

adj. pitted with cell-like cavities (as a honeycomb)

"That condition of soil known as honeycombed furnishes a peculiarly opportune time for sowing these seeds, as it provides a covering for them while the land is moist, and thus puts them in a position to germinate as soon as growth begins."

cellular   

honeycomb   

undischarged    non-existant    biosphere    gun    low-walled