The lower part of the body behind; the buttocks.
When the baby's bottom or feet -- rather than the head -- face the mother's cervix as labor nears. Three to four percent of full-term babies are positioned this way
When the baby is bottom down or feet first rather than head down in the uterus.
The buttocks (often refers to a fetal presentation). X Y Z
Position for birth in which the buttocks, knees, or feet of the fetus are nearest to the cervix.
When the baby is in the position of bottom first, instead of head first for birth.
n. The buttocks.
Delivery of the baby with the feet or buttocks first