1. a nerve plexus formed by the 4th and 5th lumbar and 1st, 2nd, 3rd sacral nerves; supplies the pelvic region and lower limbs; [syn: sacral plexus, plexus sacralis]
WordNet (r) 3.0 (2006):
sacral plexus
n 1: a nerve plexus formed by the 4th and 5th lumbar and 1st,
2nd, 3rd sacral nerves; supplies the pelvic region and
lower limbs [syn: sacral plexus, plexus sacralis]