In medicine,<unk> has two meanings: *the act of hollowing out *the space hollowed out, or a natural cavity or pouch Examples of the latter include: *Rectouterine pouch or<unk>  between the uterus and the rectum *Rectovesical<unk>  between the rectum and the male bladder *Vesicouterine<unk>  between the bladder and the uterus in a female
Excavation 
Metastasectomy
Wedge resection
Cryosurgery
Cryoablation
Bullectomy
Corpectomy
Blepharoplasty