saddle block anesthesia: the parts of a patient's body that would touch a saddle if the patient were sitting in one are anesthetized by injecting a local anesthetic into the spinal cord
spinal anesthesia: anesthesia of the lower half of the body; caused by injury to the spinal cord or by injecting an anesthetic beneath the arachnoid membrane that surrounds the spinal cord
edible snail: one of the chief edible snails