1. a nerve plexus formed by the ventral divisions of the coccygeal and sacral and lumbar nerves; supplies the lower limbs and perineum and coccygeal area;
WordNet (r) 3.0 (2006):
lumbosacral plexus
n 1: a nerve plexus formed by the ventral divisions of the
coccygeal and sacral and lumbar nerves; supplies the lower
limbs and perineum and coccygeal area