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.
    4. 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.