breech presentation

English Thesaurus

1. delivery of an infant whose feet or buttocks appear first (noun.act)

hypernym	:	delivery, obstetrical delivery,
definition	:	the act of delivering a child (noun.act)

hyponym	:	frank breech, frank breech delivery,
definition	:	position of a fetus in which the buttocks are present at the maternal pelvic outlet (noun.act)