pudendal block: regional anesthesia resulting from the use of a local anesthetic to deaden the pudendal nerves in the region of the vulva and labia majora; used to ease discomfort during childbirth
regional anesthesia: loss of sensation in a region of the body produced by application of an anesthetic agent to all the nerves supplying that region (as when an epidural anesthetic is administered to the pelvic region during childbirth)
jellyfish: any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans