Cavities [noun]

That which is called nasality is caused by the failure of the tone to reach freely the anterior cavities of the nares.

(c) Decomposition of exudates anywhere in the body, as in empyema, bronchiectasis, and large tuberculous cavities.

Moreover, I will admit that I got frightened at my inexperience, and confined my experiments to three or four cavities.

Soon after entering the ravine the horse broke through into one of the underground cavities and fell heavily on his side.

On all sides are seen the deep cavities which formed the entrances to the now exhausted mines.

The crystals are opaque, but very smooth and glistening, lining cavities in this mass of limestone.

The jackdaws had their nests in the hollow places of these elms; for the elm as it ages becomes full of cavities.

The material is by no means fine in quality, presenting, as it does on close inspection, several small cavities or air-bubbles.

Winding trails of light webbed the crater's walls, and at places ebon cavities jeweled among the light.

Atoms of various size were supposed to pass and repass without cessation through cavities or pores in the human body.