Cavernous

a.	1.	Full of caverns; resembling a cavern or large cavity; hollow.
	2.	Filled with small cavities or cells.
	3.	Having a sound caused by a cavity. Cavernous body a body of erectile tissue with large interspaces which may be distended with blood, as in the penis or clitoris. Cavernous respiration a peculiar respiratory sound andible on auscultation, when the bronchial tubes communicate with morbid cavities in the lungs.

Adj.	1.	cavernous - being or suggesting a cavern; "vast cavernous chambers hollowed out of limestone"
	2.	cavernous - filled with vascular sinuses and capable of becoming distended and rigid as the result of being filled with blood; "erectile tissue"; "the penis is an erectile organ" Synonyms: erectile

abysmal, abyssal, boat-shaped, boatlike, bottomless, bowl-shaped, bowllike, cavelike, commodious, concave, concaved, craterlike, cup-shaped, cupped, cymbiform, deep as hell, dish-shaped, dished, dishing, dishlike, fathomless, funnel-breasted, funnel-chested, funnel-shaped, gaping, hollow, hollowed, incurved, incurving, incurvous, infundibular, infundibuliform, navicular, naviform, plumbless, plunging, retiring, retreating, reverberant, saucer-shaped, scaphoid, scyphate, sepulchral, soundless, spoonlike, sunk, sunken, unfathomable, unfathomed, unsounded, vast, without bottom, yawning